Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 324 · 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. 1.251 − 98 =
2. 2.208 − 78 =
3. 3.559 − 77 =
4. 4.538 − 38 =
5. 5.435 − 29 =
6. 6.569 − 29 =
7. 7.475 − 49 =
8. 8.366 − 26 =
9. 9.500 − 99 =
10. 10.228 − 69 =
11. 11.95 − 86 =
12. 12.424 − 36 =
13. 13.528 − 59 =
14. 14.213 − 27 =
15. 15.469 − 19 =
16. 16.150 − 58 =
17. 17.557 − 99 =
18. 18.557 − 86 =
19. 19.404 − 18 =
20. 20.306 − 46 =
21. 21.213 − 86 =
22. 22.164 − 57 =
23. 23.567 − 48 =
24. 24.140 − 26 =
25. 25.200 − 19 =
26. 26.332 − 96 =
27. 27.205 − 37 =
28. 28.208 − 76 =
29. 29.259 − 38 =
30. 30.477 − 17 =
31. 31.148 − 67 =
32. 32.294 − 38 =
33. 33.256 − 38 =
34. 34.260 − 38 =
35. 35.164 − 67 =
36. 36.180 − 88 =
37. 37.395 − 47 =
38. 38.263 − 16 =
39. 39.255 − 46 =
40. 40.499 − 58 =

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