Show:
Addition within 10
Subtraction within 10
Addition within 20
Subtraction within 20
Count by 2, 5, 10
100

What is 1+1

2

100

What is 10-1

9

100

What is 10 + 10

20

100

What is 20-20

0

100

Count by 10

10 -100

200

What is 2+2

4

200

What is 10-2

8

200

What is 10 + 3

13

200

What is 20-10

10

200

Count by 5 

5 10 100

300

What is 3+3

6

300

What is 10-3

7

300

What is 10+5

15

300

What is 20-3

17

300

Count by 2 

2 - 50

400

What is 4+4

8

400

What is 10-4

6

400

What is 10+7

17

400

What is 20-8

12

400

Count by 2 

Starting at 20-50
500

What is 5+5

10

500

What is 10-5

5

500
What is 10+9

19

500

What is 20-15

5

500

Count by 2

2-100