Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 721 · 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. 1.474 − 16 =
2. 2.71 − 28 =
3. 3.192 − 98 =
4. 4.228 − 18 =
5. 5.518 − 66 =
6. 6.389 − 56 =
7. 7.505 − 49 =
8. 8.430 − 68 =
9. 9.218 − 57 =
10. 10.399 − 37 =
11. 11.576 − 56 =
12. 12.143 − 16 =
13. 13.385 − 79 =
14. 14.146 − 19 =
15. 15.56 − 27 =
16. 16.390 − 16 =
17. 17.453 − 19 =
18. 18.104 − 56 =
19. 19.251 − 96 =
20. 20.137 − 69 =
21. 21.313 − 17 =
22. 22.367 − 26 =
23. 23.476 − 89 =
24. 24.379 − 36 =
25. 25.164 − 86 =
26. 26.301 − 16 =
27. 27.121 − 19 =
28. 28.214 − 97 =
29. 29.467 − 26 =
30. 30.317 − 68 =
31. 31.102 − 49 =
32. 32.155 − 46 =
33. 33.226 − 56 =
34. 34.454 − 37 =
35. 35.451 − 59 =
36. 36.366 − 17 =
37. 37.264 − 56 =
38. 38.114 − 39 =
39. 39.560 − 66 =
40. 40.67 − 26 =

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