Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 446 · 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. 1.417 − 99 =
2. 2.85 − 26 =
3. 3.106 − 38 =
4. 4.142 − 16 =
5. 5.185 − 89 =
6. 6.120 − 29 =
7. 7.196 − 76 =
8. 8.276 − 68 =
9. 9.172 − 89 =
10. 10.344 − 36 =
11. 11.428 − 46 =
12. 12.383 − 19 =
13. 13.488 − 96 =
14. 14.580 − 27 =
15. 15.369 − 38 =
16. 16.216 − 49 =
17. 17.130 − 68 =
18. 18.124 − 87 =
19. 19.71 − 16 =
20. 20.69 − 27 =
21. 21.245 − 56 =
22. 22.121 − 49 =
23. 23.298 − 59 =
24. 24.130 − 56 =
25. 25.597 − 46 =
26. 26.377 − 38 =
27. 27.256 − 58 =
28. 28.113 − 69 =
29. 29.533 − 98 =
30. 30.171 − 87 =
31. 31.319 − 27 =
32. 32.419 − 99 =
33. 33.158 − 59 =
34. 34.524 − 46 =
35. 35.502 − 48 =
36. 36.82 − 79 =
37. 37.461 − 98 =
38. 38.345 − 76 =
39. 39.322 − 47 =
40. 40.178 − 96 =

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