Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 638 · 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. 1.197 − 77 =
2. 2.567 − 89 =
3. 3.366 − 16 =
4. 4.330 − 59 =
5. 5.323 − 77 =
6. 6.537 − 67 =
7. 7.104 − 98 =
8. 8.168 − 89 =
9. 9.508 − 19 =
10. 10.117 − 98 =
11. 11.454 − 56 =
12. 12.538 − 66 =
13. 13.485 − 36 =
14. 14.153 − 79 =
15. 15.514 − 68 =
16. 16.107 − 58 =
17. 17.128 − 29 =
18. 18.463 − 96 =
19. 19.439 − 17 =
20. 20.502 − 76 =
21. 21.534 − 29 =
22. 22.346 − 36 =
23. 23.442 − 76 =
24. 24.578 − 16 =
25. 25.499 − 27 =
26. 26.290 − 39 =
27. 27.323 − 57 =
28. 28.110 − 47 =
29. 29.204 − 47 =
30. 30.95 − 47 =
31. 31.143 − 69 =
32. 32.291 − 79 =
33. 33.348 − 88 =
34. 34.73 − 66 =
35. 35.479 − 29 =
36. 36.266 − 28 =
37. 37.499 − 18 =
38. 38.166 − 29 =
39. 39.138 − 36 =
40. 40.263 − 26 =

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