1. Subtraction 3rd – 5th grade
Removal

2. Category 1
Consists of two-digit numbers that do not require regrouping or decomposing

3. 35 – – – – 22

4. 49 – – – – 26

5. 48 – – – – 23

6. 53 – – – – 34

7. 57 – – – – 33

8. 69 – – – – 42

9. 73 – – – – 27

10. 86 – – – – 51

11. 98 – – – – 79

12. Category 2
Consists of two-digit numbers that require regrouping or decomposing

13. 23 – 10
23 – 14
23 – 18
23 – 15

14. 33 – 10
33 – 14
33 – 20
33 – 25

15. 45 – 20
45 – 26
45 – 10
45 – 16

16. 42 – 30
42 – 33
43 – 10
43 – 14

17. 51 – 30
51 – 35
55 – 20
55 – 26

18. 64 – 40
64 – 45
64 – 20
64 – 28

19. 72 – 50
72 – 54
72 – 30
72 – 36

20. 81 – 50
81 – 55
83 – 70
83 – 74

21. 91 – 60
91 – 63
94 – 50
94 – 56

22. Category 3
Consists of two- and three- digit numbers; some required regrouping

23. 100 – – – – 64

24. 100 – – – – 37

25. 100 – – – – 55

26. 150 – – – – 28

27. 200 – – – – 153

28. 200 – – – – 65

29. 150 – – – – 115

30. 345 – – – – 234

31. 543 – – – – 240