Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 944 · 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. 1.167 − 16 =
2. 2.245 − 28 =
3. 3.158 − 89 =
4. 4.163 − 79 =
5. 5.157 − 19 =
6. 6.556 − 88 =
7. 7.139 − 78 =
8. 8.373 − 39 =
9. 9.242 − 99 =
10. 10.191 − 99 =
11. 11.490 − 16 =
12. 12.303 − 88 =
13. 13.499 − 67 =
14. 14.574 − 38 =
15. 15.418 − 26 =
16. 16.152 − 96 =
17. 17.473 − 57 =
18. 18.411 − 88 =
19. 19.480 − 29 =
20. 20.170 − 99 =
21. 21.501 − 28 =
22. 22.157 − 99 =
23. 23.258 − 59 =
24. 24.196 − 56 =
25. 25.450 − 78 =
26. 26.167 − 96 =
27. 27.165 − 86 =
28. 28.202 − 47 =
29. 29.245 − 49 =
30. 30.328 − 46 =
31. 31.87 − 29 =
32. 32.56 − 46 =
33. 33.254 − 88 =
34. 34.379 − 88 =
35. 35.474 − 99 =
36. 36.413 − 66 =
37. 37.573 − 27 =
38. 38.173 − 86 =
39. 39.432 − 59 =
40. 40.594 − 29 =

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