Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 3 · 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. 1.471 − 46 =
2. 2.282 − 48 =
3. 3.397 − 57 =
4. 4.275 − 96 =
5. 5.197 − 96 =
6. 6.154 − 86 =
7. 7.231 − 29 =
8. 8.183 − 66 =
9. 9.346 − 57 =
10. 10.298 − 68 =
11. 11.533 − 39 =
12. 12.77 − 49 =
13. 13.479 − 16 =
14. 14.313 − 97 =
15. 15.417 − 17 =
16. 16.183 − 89 =
17. 17.469 − 98 =
18. 18.317 − 19 =
19. 19.94 − 27 =
20. 20.371 − 69 =
21. 21.121 − 79 =
22. 22.198 − 57 =
23. 23.147 − 46 =
24. 24.277 − 86 =
25. 25.483 − 46 =
26. 26.138 − 56 =
27. 27.532 − 96 =
28. 28.66 − 28 =
29. 29.506 − 69 =
30. 30.312 − 86 =
31. 31.193 − 29 =
32. 32.523 − 37 =
33. 33.107 − 96 =
34. 34.261 − 67 =
35. 35.541 − 26 =
36. 36.61 − 48 =
37. 37.208 − 37 =
38. 38.118 − 98 =
39. 39.129 − 18 =
40. 40.436 − 38 =

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