Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 148 · 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. 1.210 − 18 =
2. 2.372 − 16 =
3. 3.222 − 77 =
4. 4.408 − 36 =
5. 5.519 − 86 =
6. 6.228 − 59 =
7. 7.153 − 99 =
8. 8.540 − 96 =
9. 9.171 − 96 =
10. 10.103 − 88 =
11. 11.504 − 67 =
12. 12.526 − 66 =
13. 13.254 − 37 =
14. 14.195 − 26 =
15. 15.201 − 19 =
16. 16.158 − 98 =
17. 17.391 − 48 =
18. 18.134 − 56 =
19. 19.422 − 28 =
20. 20.101 − 27 =
21. 21.303 − 48 =
22. 22.145 − 38 =
23. 23.448 − 16 =
24. 24.551 − 96 =
25. 25.369 − 16 =
26. 26.304 − 57 =
27. 27.83 − 18 =
28. 28.186 − 87 =
29. 29.195 − 86 =
30. 30.294 − 29 =
31. 31.197 − 18 =
32. 32.244 − 47 =
33. 33.431 − 96 =
34. 34.503 − 56 =
35. 35.538 − 19 =
36. 36.556 − 76 =
37. 37.165 − 69 =
38. 38.421 − 89 =
39. 39.165 − 28 =
40. 40.292 − 68 =

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