Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 12 · 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. 1.450 − 69 =
2. 2.62 − 26 =
3. 3.267 − 18 =
4. 4.472 − 77 =
5. 5.200 − 36 =
6. 6.336 − 38 =
7. 7.425 − 28 =
8. 8.481 − 96 =
9. 9.138 − 29 =
10. 10.562 − 37 =
11. 11.101 − 18 =
12. 12.480 − 49 =
13. 13.226 − 69 =
14. 14.525 − 89 =
15. 15.77 − 57 =
16. 16.191 − 76 =
17. 17.70 − 36 =
18. 18.113 − 69 =
19. 19.238 − 36 =
20. 20.266 − 76 =
21. 21.237 − 86 =
22. 22.176 − 36 =
23. 23.591 − 48 =
24. 24.245 − 87 =
25. 25.96 − 48 =
26. 26.223 − 89 =
27. 27.241 − 17 =
28. 28.355 − 17 =
29. 29.62 − 39 =
30. 30.367 − 66 =
31. 31.287 − 86 =
32. 32.180 − 27 =
33. 33.197 − 76 =
34. 34.435 − 89 =
35. 35.347 − 49 =
36. 36.417 − 28 =
37. 37.582 − 27 =
38. 38.57 − 39 =
39. 39.561 − 37 =
40. 40.503 − 79 =

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