Missing Number
Addition I
Addition II
Subtraction I
Subtraction II
100

What is the missing number?

2, 4, 6, ___, 10, 12

8

100

7 + 9 =

16

100

5 + 3 = 

8


100

6 - 3 = 

3

100

5 - 3 = 

2

200

What is the missing number?

5, ___, 15, 20, 25

10

200

12 + 6 = 

18

200

7 + 6 =

13

200

8 - 2 = 

6

200

9 - 4 = 

5

300

What is the missing number?

10, 20, 30, 40, ___, 60

50

300

15 + 10 = 

25

300

90 + 10 =

100

300

29 - 10 =

19

300

34 - 10 = 

24

400

What is the missing number?

0, 20, 40, 60, ___

80

400

There are 4 cats on the sofa.
3 more cats jump up.
How many cats are on the sofa now?

7 cats

400

Ben has 5 strawberries.
His sister gives him 6 more.
How many strawberries does Ben have in total?

11 strawberries

400

Tom had 7 balloons.
2 balloons flew away.
How many balloons does Tom have left?

5 balloons

400

Penny had 9 teddy bears.
She gave 6 to her cousins.
How many teddy bears does Penny have now?

3 teddy bears

500

What is the missing number?

150, 300, 450, 600, 750, ____

900

500

There are 17 pencils in a box.
The teacher puts 10 more pencils in.
How many pencils are in the box now?

27 pencils
500

Emma got 73 presents from her mom.
She got 10 presents from her friends.
How many presents did Emma get?

83 presents

500

There were 18 dogs in the park. 10 dogs went home. How many dogs are still in the park?

8 dogs

500

Sally had 42 apples.
She gave 10 apples to her friends.
How many apples does Sally have now?

32 apples