Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 712 · 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. 1.363 − 29 =
2. 2.276 − 36 =
3. 3.569 − 96 =
4. 4.154 − 46 =
5. 5.323 − 36 =
6. 6.161 − 99 =
7. 7.65 − 48 =
8. 8.208 − 87 =
9. 9.167 − 87 =
10. 10.568 − 89 =
11. 11.173 − 16 =
12. 12.284 − 37 =
13. 13.451 − 49 =
14. 14.598 − 29 =
15. 15.436 − 46 =
16. 16.376 − 49 =
17. 17.294 − 39 =
18. 18.441 − 36 =
19. 19.151 − 37 =
20. 20.143 − 77 =
21. 21.241 − 98 =
22. 22.415 − 99 =
23. 23.96 − 47 =
24. 24.568 − 57 =
25. 25.272 − 48 =
26. 26.140 − 79 =
27. 27.341 − 66 =
28. 28.316 − 58 =
29. 29.218 − 27 =
30. 30.346 − 47 =
31. 31.583 − 46 =
32. 32.113 − 26 =
33. 33.418 − 28 =
34. 34.300 − 17 =
35. 35.250 − 88 =
36. 36.585 − 17 =
37. 37.490 − 19 =
38. 38.115 − 47 =
39. 39.197 − 96 =
40. 40.551 − 29 =

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