Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 457 · 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. 1.95 − 56 =
2. 2.247 − 76 =
3. 3.289 − 97 =
4. 4.314 − 86 =
5. 5.86 − 29 =
6. 6.331 − 58 =
7. 7.187 − 88 =
8. 8.325 − 28 =
9. 9.196 − 26 =
10. 10.283 − 68 =
11. 11.112 − 46 =
12. 12.580 − 78 =
13. 13.449 − 36 =
14. 14.143 − 86 =
15. 15.80 − 17 =
16. 16.457 − 39 =
17. 17.450 − 76 =
18. 18.124 − 88 =
19. 19.455 − 96 =
20. 20.480 − 46 =
21. 21.538 − 47 =
22. 22.384 − 96 =
23. 23.587 − 46 =
24. 24.225 − 88 =
25. 25.172 − 99 =
26. 26.191 − 86 =
27. 27.249 − 18 =
28. 28.168 − 29 =
29. 29.575 − 76 =
30. 30.85 − 19 =
31. 31.187 − 26 =
32. 32.401 − 27 =
33. 33.371 − 47 =
34. 34.457 − 97 =
35. 35.546 − 79 =
36. 36.349 − 88 =
37. 37.422 − 66 =
38. 38.462 − 76 =
39. 39.233 − 89 =
40. 40.341 − 29 =

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