Addition
Subtraction
Before
After
Counting
100

Solve the math problem:

2+5= ___

7

100

Solve the math problem:

5-4=

100

Number before 5

4

100

Number after 6

7

100

X X X X X

5

200

Solve the math problem:

4+4= ___

8

200

Solve the math problem:

9-6=

200

Number before 8

7

200

Number after 3

4

200

X X X X

X X X 

7

300

Solve the math problem:

5+7=

12

300

Solve the math problem:

10-3=

300

Number before 10

9

300

Number after 11

12

300

X X X X X

X X X X X

10

400

Solve the math problem:

8+3=

11

400

Solve the math problem:

12-10=

400

Number before 15

14

400

Number after 17

18

400

X X X X X X X

 X X X X X X

13

500

Solve the math problem:

10+7=

17

500

Solve the math problem:

15-5=

500
Number before 20

19

500

Number after 19

20

500

X X X X X X

X X X X X X 

X X X X X X 

18

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