1. RESPONSABILITY
TRICK 1 ANSWER
Think of a number. Original number : …….
Multiply the number by three. Multiply by : …. x 3 = …...
Add one. Add 1 : …. + 1 = …..
Multiply by three again. Multiply by 3 again : …. x 3 = ……
Add the number you originally thought of. Add the original number : ….+ …..= ……
The original number must be ……..
TRICK 2 ANSWER
Think of a number. Original number : …….
Double it . Double it : …. x 2 = …...
Add four . Add 4 : …. + 4 = …..
Multiply by five Multiply by 5 : …. x 5 = ……
Add twelve Add 12 : …. + …..= ……
Multiply by ten. Multiply by 10 : …. x 10 = ……
Subtract 320 Subtract 320 : …… - 320 = ……
Remove the 0s Remove the 0s : ……. is the answer
NUMBER PUZZLES
PUZZLE 1
Complete the box with the correct number .
Clue: Look at the numbers above , above to the left and on the left of each number .
1 1 1 1
1 3 5 7 ?
1 5 13 25
1 7 25 ? The missing number is ……
Answer : The missing number is the sum of …….. + ……. + ……. = ………
PUZZLE 2
A dealer bought a painting for $ 7000 and sold it for $ 8000 . Then he bought it back again for $
9000 and the sold it again for $ 10000 . How much profit did he make ?
Answer : His profit was ……
2. PUZZLE 3
To make 2 figures like this How many circles and triangles do we need ?
circles
X =
X = triangles
LOGIC PUZZLES
100 METERS 50 METERS
70 METERS
S
TER
ME
50
S
TER
ME
90 S
TER
140 METERS ME
140
S
TER
ME
60
1. How many meters can we walk around the library ? ……………............................... meters.
2. How many meters can Pedro walk around the park ? …………….............................. meters.
3. How many meters can we walk around the market ? …………….............................. meters.
4. How many meters can you walk around the school ? ………….................................. meters.
SEQUENCE PUZZLE 1
1. What number follow : How many squares are there in the figure ?
one ; one ; two ; four ; seven ; eleven ; ……..
2. Complete the sequence :
………..
Answer : …………………….
SOLVING PROBLEMS
1. How many hours are there in 5 weeks ?
1 week = 7 days
1 day = 24 hours
Answer : ……………
3. 2. How many months are there in 7 years ?
1 year = 12 month
Answer : …………..