Addition
Subtraction
Counting by tens
Find the missing number
100

What is 5+2?

7

100

What is 5-3?

2

100

Start at 10, and count by 10s one time. What number do you land on?

20

100

What number is in between 20 and 22?

21

200

What is 6+3?

9

200

What is 6-3?

3

200

Start at 10 and count by 10's 2 times. What number do you land on?

30

200

What number is in between 32 and 34?

33

300

What is 10+2?

12

300

What is 10-2?

8

300

Start at 10 and count by 10's 5 times. What number do you land on?

60

300

What number is 3 more than 25?

28

400

What is 11+5?

16

400

What is 11-5?

6

400

Start at 100 and count backwards 10. What number do you land on?

90

400

What number comes right before 61?

60

500

What is 20+10?

30

500

What is 20-10?

10

500

Start at 100 and count backwards by 10's 2 times. What number do you land on?

80

500

What number comes right after 81?

82