Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 407 · 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. 1.528 − 67 =
2. 2.58 − 56 =
3. 3.472 − 36 =
4. 4.136 − 16 =
5. 5.216 − 56 =
6. 6.582 − 67 =
7. 7.246 − 29 =
8. 8.95 − 66 =
9. 9.196 − 99 =
10. 10.546 − 78 =
11. 11.179 − 17 =
12. 12.170 − 48 =
13. 13.444 − 39 =
14. 14.404 − 67 =
15. 15.591 − 49 =
16. 16.150 − 48 =
17. 17.172 − 38 =
18. 18.547 − 88 =
19. 19.588 − 28 =
20. 20.229 − 17 =
21. 21.166 − 38 =
22. 22.117 − 67 =
23. 23.91 − 37 =
24. 24.480 − 47 =
25. 25.228 − 96 =
26. 26.231 − 69 =
27. 27.363 − 48 =
28. 28.97 − 88 =
29. 29.321 − 58 =
30. 30.543 − 26 =
31. 31.433 − 18 =
32. 32.415 − 47 =
33. 33.142 − 36 =
34. 34.82 − 48 =
35. 35.388 − 87 =
36. 36.396 − 97 =
37. 37.378 − 16 =
38. 38.378 − 39 =
39. 39.449 − 59 =
40. 40.263 − 76 =

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