Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 928 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.297 − 36 =
2. 2.539 − 59 =
3. 3.552 − 67 =
4. 4.229 − 97 =
5. 5.122 − 48 =
6. 6.441 − 16 =
7. 7.109 − 77 =
8. 8.376 − 57 =
9. 9.546 − 39 =
10. 10.498 − 47 =
11. 11.280 − 17 =
12. 12.570 − 67 =
13. 13.157 − 98 =
14. 14.118 − 76 =
15. 15.216 − 38 =
16. 16.305 − 67 =
17. 17.313 − 67 =
18. 18.95 − 58 =
19. 19.107 − 78 =
20. 20.145 − 38 =
21. 21.401 − 18 =
22. 22.424 − 37 =
23. 23.539 − 46 =
24. 24.208 − 59 =
25. 25.145 − 88 =
26. 26.512 − 29 =
27. 27.458 − 87 =
28. 28.493 − 68 =
29. 29.120 − 27 =
30. 30.62 − 58 =
31. 31.156 − 48 =
32. 32.478 − 78 =
33. 33.460 − 77 =
34. 34.570 − 89 =
35. 35.331 − 78 =
36. 36.599 − 38 =
37. 37.503 − 59 =
38. 38.100 − 16 =
39. 39.232 − 67 =
40. 40.305 − 39 =

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