Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 163 · 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. 1.57 − 26 =
2. 2.256 − 16 =
3. 3.189 − 69 =
4. 4.346 − 69 =
5. 5.65 − 56 =
6. 6.576 − 27 =
7. 7.320 − 47 =
8. 8.467 − 39 =
9. 9.473 − 68 =
10. 10.441 − 36 =
11. 11.352 − 78 =
12. 12.384 − 16 =
13. 13.498 − 29 =
14. 14.58 − 29 =
15. 15.106 − 77 =
16. 16.597 − 67 =
17. 17.305 − 48 =
18. 18.285 − 26 =
19. 19.518 − 89 =
20. 20.171 − 17 =
21. 21.578 − 17 =
22. 22.216 − 47 =
23. 23.541 − 87 =
24. 24.357 − 28 =
25. 25.487 − 38 =
26. 26.461 − 78 =
27. 27.341 − 77 =
28. 28.176 − 89 =
29. 29.510 − 99 =
30. 30.438 − 89 =
31. 31.590 − 96 =
32. 32.595 − 26 =
33. 33.242 − 38 =
34. 34.538 − 89 =
35. 35.578 − 86 =
36. 36.364 − 76 =
37. 37.356 − 47 =
38. 38.574 − 96 =
39. 39.218 − 18 =
40. 40.164 − 87 =

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