Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 445 · 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. 1.455 − 86 =
2. 2.259 − 16 =
3. 3.287 − 96 =
4. 4.123 − 97 =
5. 5.64 − 59 =
6. 6.480 − 86 =
7. 7.191 − 48 =
8. 8.543 − 76 =
9. 9.492 − 39 =
10. 10.210 − 56 =
11. 11.581 − 99 =
12. 12.254 − 97 =
13. 13.165 − 26 =
14. 14.303 − 49 =
15. 15.169 − 79 =
16. 16.509 − 27 =
17. 17.555 − 86 =
18. 18.380 − 26 =
19. 19.377 − 48 =
20. 20.155 − 88 =
21. 21.545 − 59 =
22. 22.168 − 28 =
23. 23.248 − 79 =
24. 24.198 − 26 =
25. 25.204 − 38 =
26. 26.119 − 88 =
27. 27.322 − 17 =
28. 28.259 − 47 =
29. 29.597 − 67 =
30. 30.590 − 56 =
31. 31.136 − 39 =
32. 32.505 − 67 =
33. 33.160 − 57 =
34. 34.269 − 16 =
35. 35.473 − 76 =
36. 36.121 − 56 =
37. 37.398 − 27 =
38. 38.327 − 69 =
39. 39.275 − 68 =
40. 40.553 − 18 =

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