Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 940 · 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. 1.431 − 86 =
2. 2.529 − 18 =
3. 3.289 − 19 =
4. 4.164 − 49 =
5. 5.575 − 49 =
6. 6.149 − 36 =
7. 7.471 − 56 =
8. 8.140 − 26 =
9. 9.244 − 38 =
10. 10.373 − 87 =
11. 11.310 − 38 =
12. 12.436 − 19 =
13. 13.164 − 88 =
14. 14.493 − 86 =
15. 15.565 − 28 =
16. 16.85 − 76 =
17. 17.260 − 49 =
18. 18.401 − 99 =
19. 19.356 − 97 =
20. 20.299 − 66 =
21. 21.383 − 27 =
22. 22.173 − 59 =
23. 23.325 − 16 =
24. 24.356 − 56 =
25. 25.290 − 17 =
26. 26.563 − 66 =
27. 27.213 − 86 =
28. 28.537 − 57 =
29. 29.351 − 68 =
30. 30.407 − 38 =
31. 31.370 − 19 =
32. 32.578 − 76 =
33. 33.88 − 87 =
34. 34.95 − 36 =
35. 35.159 − 66 =
36. 36.102 − 39 =
37. 37.167 − 46 =
38. 38.228 − 17 =
39. 39.502 − 18 =
40. 40.492 − 19 =

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