Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 175 · 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. 1.130 − 57 =
2. 2.92 − 39 =
3. 3.546 − 78 =
4. 4.502 − 57 =
5. 5.171 − 16 =
6. 6.78 − 38 =
7. 7.136 − 36 =
8. 8.164 − 77 =
9. 9.510 − 96 =
10. 10.138 − 96 =
11. 11.305 − 58 =
12. 12.309 − 86 =
13. 13.541 − 36 =
14. 14.545 − 69 =
15. 15.441 − 36 =
16. 16.591 − 79 =
17. 17.561 − 16 =
18. 18.309 − 28 =
19. 19.226 − 37 =
20. 20.388 − 37 =
21. 21.209 − 18 =
22. 22.499 − 29 =
23. 23.344 − 16 =
24. 24.327 − 16 =
25. 25.193 − 96 =
26. 26.330 − 89 =
27. 27.591 − 57 =
28. 28.349 − 58 =
29. 29.251 − 98 =
30. 30.519 − 76 =
31. 31.594 − 66 =
32. 32.340 − 86 =
33. 33.546 − 99 =
34. 34.486 − 46 =
35. 35.548 − 88 =
36. 36.300 − 87 =
37. 37.374 − 58 =
38. 38.353 − 77 =
39. 39.277 − 89 =
40. 40.450 − 49 =

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