Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 615 · 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. 1.244 − 16 =
2. 2.165 − 26 =
3. 3.369 − 56 =
4. 4.274 − 28 =
5. 5.324 − 66 =
6. 6.141 − 97 =
7. 7.506 − 47 =
8. 8.425 − 89 =
9. 9.315 − 76 =
10. 10.207 − 89 =
11. 11.421 − 17 =
12. 12.154 − 28 =
13. 13.530 − 59 =
14. 14.459 − 39 =
15. 15.277 − 78 =
16. 16.228 − 47 =
17. 17.127 − 57 =
18. 18.381 − 78 =
19. 19.594 − 66 =
20. 20.419 − 88 =
21. 21.352 − 56 =
22. 22.572 − 99 =
23. 23.190 − 79 =
24. 24.323 − 78 =
25. 25.531 − 19 =
26. 26.439 − 59 =
27. 27.106 − 87 =
28. 28.438 − 28 =
29. 29.179 − 18 =
30. 30.230 − 89 =
31. 31.364 − 97 =
32. 32.115 − 26 =
33. 33.113 − 76 =
34. 34.372 − 59 =
35. 35.147 − 49 =
36. 36.479 − 86 =
37. 37.246 − 46 =
38. 38.451 − 88 =
39. 39.72 − 56 =
40. 40.170 − 49 =

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