Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 156 · 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. 1.209 − 66 =
2. 2.378 − 77 =
3. 3.522 − 96 =
4. 4.474 − 88 =
5. 5.325 − 19 =
6. 6.400 − 89 =
7. 7.115 − 88 =
8. 8.488 − 69 =
9. 9.481 − 99 =
10. 10.205 − 79 =
11. 11.571 − 88 =
12. 12.157 − 79 =
13. 13.422 − 96 =
14. 14.593 − 18 =
15. 15.528 − 99 =
16. 16.249 − 16 =
17. 17.383 − 19 =
18. 18.530 − 89 =
19. 19.199 − 97 =
20. 20.355 − 39 =
21. 21.97 − 16 =
22. 22.125 − 16 =
23. 23.222 − 69 =
24. 24.299 − 27 =
25. 25.386 − 57 =
26. 26.188 − 39 =
27. 27.132 − 57 =
28. 28.96 − 87 =
29. 29.531 − 49 =
30. 30.402 − 48 =
31. 31.302 − 59 =
32. 32.494 − 27 =
33. 33.540 − 29 =
34. 34.148 − 77 =
35. 35.486 − 98 =
36. 36.160 − 89 =
37. 37.370 − 76 =
38. 38.160 − 89 =
39. 39.215 − 89 =
40. 40.519 − 28 =

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