Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 36 · 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. 1.157 − 97 =
2. 2.107 − 56 =
3. 3.582 − 58 =
4. 4.469 − 17 =
5. 5.428 − 56 =
6. 6.53 − 47 =
7. 7.111 − 48 =
8. 8.354 − 29 =
9. 9.429 − 59 =
10. 10.565 − 16 =
11. 11.252 − 26 =
12. 12.312 − 89 =
13. 13.453 − 17 =
14. 14.379 − 69 =
15. 15.381 − 39 =
16. 16.544 − 18 =
17. 17.331 − 58 =
18. 18.177 − 49 =
19. 19.122 − 86 =
20. 20.170 − 26 =
21. 21.214 − 37 =
22. 22.338 − 49 =
23. 23.97 − 16 =
24. 24.515 − 26 =
25. 25.495 − 39 =
26. 26.80 − 68 =
27. 27.526 − 49 =
28. 28.159 − 26 =
29. 29.511 − 18 =
30. 30.339 − 56 =
31. 31.135 − 87 =
32. 32.549 − 87 =
33. 33.597 − 29 =
34. 34.454 − 76 =
35. 35.153 − 96 =
36. 36.107 − 67 =
37. 37.215 − 48 =
38. 38.246 − 87 =
39. 39.112 − 97 =
40. 40.506 − 86 =

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