The document describes an exercise for mental addition skills. It instructs the reader to continuously add single digit numbers from 1 to 9 for 5 minutes without making mistakes. If a mistake is made, the reader must restart the exercise. The exercise recommends practicing addition patterns provided in tables for increasing durations of time up to 60 minutes to improve mental math skills.

1. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
Env↑ronMENTAL Training is for anyone but not for everyone; anyone can do it, but not
everyone will
© C. & D. Okonkwo 2015
1

2. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
A VERY SIMPLE ADDITION GAME
(For Adults & Children)
by
Chuka & Dubem Okonkwo
© C. & D. Okonkwo 2015
2

3. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
1 2 3
4 5 6
7 8 9
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
3

4. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
3 5 7
6 2 8
9 4 1
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
4

5. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
9 1 6
5 4 3
7 8 2
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
5

6. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
4 2 8
7 1 9
6 5 3
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
6

7. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
5 9 2
1 6 7
4 3 8
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
7

8. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
6 8 1
3 9 4
2 7 5
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
8

9. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
7 4 3
8 5 2
1 9 6
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
9

10. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
2 6 4
9 8 5
3 1 7
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
10

11. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
1 7 5
4 3 6
8 2 9
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
11

12. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
8 3 9
2 7 1
5 6 4
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
12

13. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
4 9 7
6 5 8
3 2 1
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
13

14. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
6 2 1
9 7 3
5 8 4
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
14

15. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
5 8 3
1 2 4
6 7 9
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
15

16. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
1 6 5
2 4 7
9 3 8
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
16

17. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
7 3 8
5 9 6
1 4 2
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
17

18. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
2 4 9
8 3 1
7 5 6
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
18

19. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
9 5 4
3 1 2
8 6 7
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
19

20. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
3 7 6
4 8 9
2 1 5
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
20

21. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
8 1 2
7 6 5
4 9 3
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
21

22. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
7 1 3
9 2 8
4 6 5
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
22

23. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
7 6 1
4 9 3
2 5 8
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
23

24. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
4 6 2
5 7 1
9 3 8
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
24

25. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
7 5 3
6 1 9
8 2 4
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
25

26. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
8 2 6
3 4 5
9 1 7
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
26

27. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
5 8 9
6 3 4
1 7 2
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
27

28. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
8 3 4
5 7 2
6 9 1
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
28

29. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
2 9 5
1 8 6
3 4 7
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
29

30. THE TW↑NS: Env↑ronMENTAL Training™
A Training, Motivating, Consulting Service
MENTAL ADDITION
Add the following single digit numbers (1 2 3 4 5 6 7 8 9) continuously for five minutes. Whenever
you lose yourself or make a mistake with your arithmetic you must begin the exercise all over
again. Once mastered try the exercise for 10, 15, 20, 25, 30....60 minutes.
e.g. 1+2=3; 3+3=6; 6+4=10; 10+5=15…
We recommend you use the pattern below
1 4 9
2 8 7
3 5 6
ANSWER GRID
(1) 45 (2) 90 (3) 135 (4) 180 (5) 225
(6) 270 (7) 315 (8) 360 (9) 405 (10) 450
(11) 495 (12) 540 (13) 585 (14) 630 (15) 675
(16) 720 (17) 765 (18) 810 (19) 855 (20) 900
(21) 945 (22) 990 (23) 1035 (24) 1080 (25) 1125
(26) 1170 (27) 1215 (28) 1260 (29) 1305 (30) 1350
(31) 1395 (32) 1440 (33) 1485 (34) 1530 (35) 1575
(36) 1620 (37) 1665 (38) 1710 (39) 1755 (40) 1800
(41) 1845 (42) 1890 (43) 1935 (44) 1980 (45) 2025
(46) 2070 (47) 2115 (48) 2160 (49) 2205 (50) 2250
(51) 2295 (52) 2340 (53) 2385 (54) 2430 (55) 2475
(56) 2520 (57) 2565 (58) 2610 (59) 2655 60) 2700
© C. & D. Okonkwo 2015
30