Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 462 · 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. 1.208 − 29 =
2. 2.247 − 77 =
3. 3.564 − 39 =
4. 4.410 − 69 =
5. 5.153 − 37 =
6. 6.456 − 27 =
7. 7.592 − 57 =
8. 8.134 − 86 =
9. 9.66 − 16 =
10. 10.161 − 97 =
11. 11.285 − 56 =
12. 12.513 − 89 =
13. 13.376 − 28 =
14. 14.530 − 16 =
15. 15.398 − 46 =
16. 16.323 − 37 =
17. 17.458 − 27 =
18. 18.183 − 86 =
19. 19.330 − 96 =
20. 20.403 − 88 =
21. 21.555 − 56 =
22. 22.170 − 96 =
23. 23.172 − 38 =
24. 24.144 − 78 =
25. 25.351 − 68 =
26. 26.152 − 88 =
27. 27.173 − 99 =
28. 28.581 − 29 =
29. 29.502 − 69 =
30. 30.266 − 26 =
31. 31.554 − 47 =
32. 32.162 − 38 =
33. 33.153 − 98 =
34. 34.506 − 58 =
35. 35.414 − 66 =
36. 36.247 − 17 =
37. 37.288 − 46 =
38. 38.350 − 37 =
39. 39.162 − 97 =
40. 40.87 − 79 =

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