Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 737 · 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. 1.365 − 28 =
2. 2.331 − 39 =
3. 3.233 − 16 =
4. 4.186 − 98 =
5. 5.425 − 96 =
6. 6.429 − 96 =
7. 7.588 − 18 =
8. 8.553 − 87 =
9. 9.339 − 28 =
10. 10.427 − 17 =
11. 11.554 − 77 =
12. 12.328 − 48 =
13. 13.515 − 96 =
14. 14.489 − 17 =
15. 15.156 − 29 =
16. 16.589 − 18 =
17. 17.239 − 46 =
18. 18.73 − 16 =
19. 19.319 − 27 =
20. 20.399 − 17 =
21. 21.581 − 99 =
22. 22.195 − 48 =
23. 23.311 − 68 =
24. 24.72 − 37 =
25. 25.136 − 46 =
26. 26.490 − 36 =
27. 27.465 − 97 =
28. 28.224 − 46 =
29. 29.105 − 79 =
30. 30.203 − 37 =
31. 31.544 − 27 =
32. 32.186 − 27 =
33. 33.384 − 99 =
34. 34.560 − 76 =
35. 35.540 − 69 =
36. 36.549 − 17 =
37. 37.58 − 18 =
38. 38.57 − 56 =
39. 39.127 − 69 =
40. 40.448 − 78 =

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