Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 803 · 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. 1.288 − 29 =
2. 2.430 − 76 =
3. 3.232 − 26 =
4. 4.457 − 38 =
5. 5.562 − 39 =
6. 6.191 − 97 =
7. 7.595 − 79 =
8. 8.283 − 17 =
9. 9.550 − 87 =
10. 10.424 − 58 =
11. 11.599 − 18 =
12. 12.171 − 96 =
13. 13.320 − 26 =
14. 14.362 − 77 =
15. 15.439 − 86 =
16. 16.101 − 36 =
17. 17.480 − 48 =
18. 18.145 − 16 =
19. 19.137 − 18 =
20. 20.308 − 77 =
21. 21.510 − 26 =
22. 22.390 − 16 =
23. 23.437 − 27 =
24. 24.276 − 88 =
25. 25.450 − 37 =
26. 26.288 − 66 =
27. 27.157 − 78 =
28. 28.156 − 66 =
29. 29.238 − 26 =
30. 30.531 − 49 =
31. 31.428 − 89 =
32. 32.228 − 89 =
33. 33.456 − 88 =
34. 34.478 − 98 =
35. 35.136 − 56 =
36. 36.309 − 28 =
37. 37.485 − 28 =
38. 38.462 − 89 =
39. 39.545 − 76 =
40. 40.308 − 57 =

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