Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 318 · 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. 1.536 − 86 =
2. 2.572 − 19 =
3. 3.453 − 77 =
4. 4.70 − 59 =
5. 5.177 − 38 =
6. 6.565 − 77 =
7. 7.128 − 98 =
8. 8.322 − 19 =
9. 9.266 − 39 =
10. 10.236 − 99 =
11. 11.252 − 67 =
12. 12.76 − 16 =
13. 13.146 − 19 =
14. 14.537 − 38 =
15. 15.436 − 19 =
16. 16.342 − 37 =
17. 17.419 − 69 =
18. 18.402 − 68 =
19. 19.565 − 36 =
20. 20.355 − 86 =
21. 21.530 − 46 =
22. 22.566 − 88 =
23. 23.474 − 59 =
24. 24.413 − 77 =
25. 25.280 − 48 =
26. 26.532 − 98 =
27. 27.90 − 87 =
28. 28.400 − 57 =
29. 29.410 − 49 =
30. 30.171 − 89 =
31. 31.483 − 59 =
32. 32.291 − 66 =
33. 33.507 − 27 =
34. 34.115 − 29 =
35. 35.133 − 47 =
36. 36.491 − 57 =
37. 37.183 − 18 =
38. 38.158 − 98 =
39. 39.446 − 76 =
40. 40.380 − 16 =

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