Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 412 · 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. 1.344 − 69 =
2. 2.164 − 97 =
3. 3.598 − 76 =
4. 4.408 − 76 =
5. 5.320 − 56 =
6. 6.287 − 59 =
7. 7.537 − 37 =
8. 8.394 − 48 =
9. 9.343 − 28 =
10. 10.309 − 17 =
11. 11.178 − 36 =
12. 12.146 − 89 =
13. 13.564 − 66 =
14. 14.160 − 67 =
15. 15.149 − 16 =
16. 16.451 − 78 =
17. 17.280 − 18 =
18. 18.67 − 58 =
19. 19.167 − 26 =
20. 20.235 − 17 =
21. 21.268 − 16 =
22. 22.228 − 58 =
23. 23.178 − 37 =
24. 24.243 − 98 =
25. 25.305 − 56 =
26. 26.460 − 59 =
27. 27.172 − 29 =
28. 28.233 − 46 =
29. 29.423 − 78 =
30. 30.110 − 96 =
31. 31.479 − 38 =
32. 32.166 − 57 =
33. 33.143 − 46 =
34. 34.438 − 87 =
35. 35.542 − 87 =
36. 36.113 − 66 =
37. 37.500 − 27 =
38. 38.320 − 16 =
39. 39.351 − 16 =
40. 40.221 − 26 =

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