Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 41 · 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. 1.75 − 29 =
2. 2.176 − 36 =
3. 3.526 − 87 =
4. 4.580 − 38 =
5. 5.362 − 96 =
6. 6.377 − 68 =
7. 7.572 − 48 =
8. 8.588 − 58 =
9. 9.424 − 86 =
10. 10.153 − 66 =
11. 11.578 − 96 =
12. 12.416 − 87 =
13. 13.163 − 88 =
14. 14.298 − 36 =
15. 15.517 − 27 =
16. 16.155 − 16 =
17. 17.180 − 99 =
18. 18.547 − 38 =
19. 19.499 − 29 =
20. 20.302 − 67 =
21. 21.143 − 18 =
22. 22.495 − 56 =
23. 23.475 − 19 =
24. 24.496 − 36 =
25. 25.278 − 26 =
26. 26.104 − 67 =
27. 27.112 − 59 =
28. 28.418 − 59 =
29. 29.463 − 16 =
30. 30.588 − 66 =
31. 31.489 − 29 =
32. 32.194 − 97 =
33. 33.344 − 47 =
34. 34.110 − 96 =
35. 35.229 − 39 =
36. 36.373 − 89 =
37. 37.520 − 48 =
38. 38.187 − 37 =
39. 39.234 − 16 =
40. 40.181 − 38 =

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