Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 656 · 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. 1.169 − 89 =
2. 2.288 − 46 =
3. 3.171 − 97 =
4. 4.121 − 27 =
5. 5.92 − 59 =
6. 6.449 − 56 =
7. 7.593 − 59 =
8. 8.162 − 26 =
9. 9.575 − 69 =
10. 10.384 − 57 =
11. 11.149 − 37 =
12. 12.178 − 29 =
13. 13.346 − 27 =
14. 14.458 − 76 =
15. 15.135 − 98 =
16. 16.598 − 48 =
17. 17.484 − 18 =
18. 18.560 − 36 =
19. 19.452 − 86 =
20. 20.581 − 88 =
21. 21.125 − 76 =
22. 22.457 − 39 =
23. 23.479 − 38 =
24. 24.421 − 89 =
25. 25.296 − 28 =
26. 26.471 − 59 =
27. 27.332 − 76 =
28. 28.91 − 69 =
29. 29.282 − 38 =
30. 30.313 − 88 =
31. 31.378 − 49 =
32. 32.594 − 78 =
33. 33.153 − 86 =
34. 34.137 − 99 =
35. 35.290 − 18 =
36. 36.325 − 98 =
37. 37.565 − 89 =
38. 38.433 − 89 =
39. 39.233 − 59 =
40. 40.127 − 67 =

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