Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 313 · 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. 1.379 − 99 =
2. 2.522 − 69 =
3. 3.288 − 27 =
4. 4.564 − 29 =
5. 5.97 − 29 =
6. 6.239 − 58 =
7. 7.453 − 87 =
8. 8.556 − 56 =
9. 9.465 − 68 =
10. 10.564 − 19 =
11. 11.212 − 19 =
12. 12.259 − 18 =
13. 13.229 − 67 =
14. 14.583 − 26 =
15. 15.422 − 39 =
16. 16.480 − 19 =
17. 17.402 − 79 =
18. 18.246 − 89 =
19. 19.409 − 27 =
20. 20.210 − 39 =
21. 21.594 − 68 =
22. 22.300 − 99 =
23. 23.108 − 39 =
24. 24.328 − 57 =
25. 25.248 − 19 =
26. 26.396 − 97 =
27. 27.283 − 67 =
28. 28.268 − 69 =
29. 29.346 − 19 =
30. 30.408 − 36 =
31. 31.204 − 97 =
32. 32.396 − 98 =
33. 33.498 − 97 =
34. 34.550 − 58 =
35. 35.224 − 18 =
36. 36.434 − 87 =
37. 37.119 − 79 =
38. 38.93 − 47 =
39. 39.92 − 49 =
40. 40.102 − 36 =

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