Math Puzzles

Find the missing number.

• 22

• 25

• 0

• 24

Answer explanation

In the top triangle, 4 + 6 + 12 = 22

In the second row, the second triangle has a sum of three numbers; 8 + 3 + 11 = 22

Thus, the missing number in the puzzle is:

7 + 5 + 13 = 25

Tags

CCSS.7.EE.B.3

What is the missing number?

• 9

• 3

• 4

• 6

Answer explanation

The numbers in the second row (from the bottom) are the difference of the corresponding two numbers in the bottom row.

That means, 6 = 8 – 2

1 = 3 – 2

7 – 3 =? 

Similarly,

6 – 1 = 5, ? – 1 = 3

And

5 – 3 = 1

From the above, we can say that the missing value is equal to 4.

Tags

CCSS.1.OA.A.1

Find the odd one out.

740, 185, 37, 407, 1369, 111, 78

• 185

• 111

• 37

• 78

Answer explanation

All the other numbers are divisible by 37 except 78.

Tags

CCSS.4.OA.B.4

if up is easy, what is the opposite of up?

• still easy
• down
• hard
• delicious

Tags

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RL.7.4

CCSS.RL.8.4

CCSS.RL.9-10.4

How many balls?

• 16
• 40
• 25
• 30

Tags

CCSS.1.NBT.A.1

• 30

• 31

• 32

• 33

Tags

CCSS.3.OA.D.8

• 60

• 61

• 62

• 63

• 100

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

• 17

• 19

• 21

• 23

Tags

CCSS.1.OA.A.1

Which number comes in the middle of each figure ?

• 12 , 24

• 3 , 24

• 4 , 24

• 6 , 24

Paul owes Paula 35 cents and has a pocket full of 5-cent coins, 10-cent coins, and 25-cent coins that he can use to pay her. What is the difference between the largest and the smallest number of coins he can use to pay her?

• 2
• 3
• 4
• 5

Tags

CCSS.4.MD.A.2