Subtraction without Regrouping
Subtraction with Regrouping
Subtraction Across Zeros
Addition
1

9 - 6 =

3

1

12 - 6 =

6

1

100 - 50 = 

50

1

15 + 5 = 

20

2

18 - 6 =

12
2

20 - 6 = 

14

2

200 - 35 =

165

2

25 + 23 = 

48

3

35 - 15 =

20

3

45 - 17 =

28

3

400 - 22 =

378

3

100 + 189 = 

289

4

47 - 12 =

35

4

671 - 338 =

333

4

600 - 87 =

513

4

245 + 136

381

5

876 - 234 = 

642

5

945 - 178

767

5

800 - 199 = 

601

5

753 + 367

1,120

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