2MATHS

1. -

3. Able to subtracts 2/3 digit numbers
Able to subtracts by regrouping/barrowing
Able to solve problems /Puzzles.

4. 1. Look at the ones. Ask:
“Can we take 3
away from 2?”
8 2
-5 3
If we can’t, then we
have to regroup.

5. 2. Regroup as needed.
8 2
-5 3
1st
:
Go next door to
the tens and take
one away.
7
2nd
:
Add the ten to
the ones.
1

6. 3. Subtract the ones.
8 2
-5 3
7
1
What is 12 – 3?
9

7. 4. Subtract the tens.
8 2
-5 3
7
1
9
What is 7 – 5?
2

8. Now let’s review the steps…
1. Look at the ones.
Ask: Can we subtract?
2. Regroup as needed:
1. Go to the tens and take one away.
2. Add the ten to the ones.
3. Subtract the ones.
4. Subtract the tens.

9. We can check our
subtraction with addition!
8 2
-5 3
7
1
92
2 9
+5 3
1st
: Move the answer ’29’ to the top of the addition problem.
2nd
: Move the subtracted number ’53’ across to complete the
addition problem.

10. Now we’re ready to add…
8 2
-5 3
7
1
92
2 9
+5 3
3rd: Add the tens –
1st:
Add the
ones: 9 + 3
2nd
:
Regroup
the ten.
2
1
8
Don’t forget to add the regrouped one!

11. Let’s see if we are right…
8 2
-5 3
7
1
92
2 9
+5 3
2
1
8
Does the answer of the addition problem ’82’
match the top number of the subtraction problem?
Yes!!
They
match!
We are
right!

12. Great Job!
Now it’s your turn to prove
you’re the math wizard!

14. YESNO

16. 0 1 2 3 4 5 6 7
8 + 2CHECK!
Count the arrows to add
up the numbers
2 + 8 = 108 + 2 = 10
+2

17. NO YES

19. 0 1 2 3 8 9 10
CHECK!
Count the arrows to add
up the numbers
4 + 3 = 7
4 + 3
+3

20. NO YES

22. 0 1 2 3
4
+5
CHECK!
Count the arrows to add
up the numbers
5 + 5
5 + 5 = 10

23. NO YES

25. 0 1 2 3 4 5
+4
CHECK!
Count the arrows to add
up the numbers
6 + 4
6 + 4 = 10 4 + 6 = 10

26. NO YES

28. 0 1 2 3 4 5 6
+2
CHECK!
Count the arrows to add
up the numbers
7 + 2
7 + 2 = 9
10

29. NO YES

31. 0 1 2 3 4 5 6 7 8 9
CHECK!
Count the arrows to add
up the numbers
When adding 0 the
number does not
change
10 + 0
10 + 0 = 10 0 + 10 = 10

32. NO YES

34. 0 1 2 3 4 5
+2
CHECK!
Count the arrows to add
up the numbers
6 + 2
6 + 2 = 8
9 10

35. NO YES

37. 0 1 2 3 4 5 6
+3
CHECK!
Count the arrows to add
up the numbers
7 + 3
7 + 3 = 10 3 + 7 = 10

38. NO YES

40. 0 1 2 3 4 5 6 7 8
CHECK!
Count the arrows to add
up the numbers
9 + 1 = 10 1 + 9 = 10
9 + 1
+1

41. NUMBER BONDS OF 10
WRITE THESE DOWN

42. I AM A NUMBER BONDI AM A NUMBER BOND
EXPERTEXPERT

44. Answer the questions
correctly and watch the
man disappear as you
do!

45. 14 + 8 =
8
–
2
=
10
+7
4 + 8 =10 – 3
=
12 – 3
=16 + 4
=
20 – 6 =
12 – 3
=

47. 14 + 8 =
8
–
2
=
10
+7
4 + 8 =10 – 3
=
16 + 4
=
20 – 6 =
10 + 7
=

49. 14 + 8 =
8
–
2
=
4 + 8 =10 – 3
=
16 + 4
=
20 – 6 =
8 – 2 =

51. 14 + 8 =
4 + 8 =10 – 3
=
16 + 4
=
20 – 6 =
16 + 4
=

53. 14 + 8 =
4 + 8 =10 – 3
=
20 – 6 =
10 – 3
=

55. 14 + 8 =
4 + 8 =
20 – 6 =
4 + 8 =

57. 14 + 8 =
20 – 6 =
14 + 8
=

59. 20 – 6 =
20 – 6
=

63. I can subtract

64. 10 – 1 = 9

65. 10 – 2 = 8

66. 10 – 3 = 7

67. 10 – 4 = 6

68. 10 – 5 = 5

69. 10 – 6 = 4

70. 10 – 7 = 3

71. 10 – 8 = 2

72. 10 – 9 = 1

73. 10 – 10 = 0

75. 10 – 3 = 7

76. 10 – 6 = 4

77. 10 – 9 = 1

78. 10 – 7 = 3

79. 10 – 5 = 5

80. 10 – 8 = 2

81. 10 – 4 = 6

82. 10 – 1 = 9

83. 10 – 10 = 0

84. 10 – 2 = 8