Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 232 · 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. 1.527 − 86 =
2. 2.323 − 88 =
3. 3.205 − 79 =
4. 4.591 − 57 =
5. 5.556 − 46 =
6. 6.193 − 17 =
7. 7.366 − 19 =
8. 8.540 − 56 =
9. 9.415 − 96 =
10. 10.169 − 17 =
11. 11.174 − 58 =
12. 12.227 − 27 =
13. 13.346 − 67 =
14. 14.232 − 66 =
15. 15.501 − 26 =
16. 16.416 − 18 =
17. 17.230 − 78 =
18. 18.428 − 27 =
19. 19.487 − 18 =
20. 20.582 − 99 =
21. 21.407 − 88 =
22. 22.527 − 96 =
23. 23.418 − 69 =
24. 24.586 − 97 =
25. 25.153 − 56 =
26. 26.276 − 16 =
27. 27.559 − 98 =
28. 28.109 − 47 =
29. 29.340 − 27 =
30. 30.488 − 89 =
31. 31.401 − 59 =
32. 32.380 − 78 =
33. 33.514 − 58 =
34. 34.102 − 29 =
35. 35.433 − 86 =
36. 36.306 − 46 =
37. 37.135 − 96 =
38. 38.387 − 77 =
39. 39.302 − 58 =
40. 40.362 − 48 =

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