Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 227 · 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. 1.135 − 28 =
2. 2.442 − 29 =
3. 3.324 − 56 =
4. 4.231 − 39 =
5. 5.508 − 66 =
6. 6.359 − 59 =
7. 7.339 − 66 =
8. 8.477 − 77 =
9. 9.374 − 46 =
10. 10.120 − 67 =
11. 11.144 − 19 =
12. 12.589 − 37 =
13. 13.529 − 19 =
14. 14.415 − 29 =
15. 15.405 − 56 =
16. 16.549 − 26 =
17. 17.341 − 56 =
18. 18.503 − 77 =
19. 19.76 − 28 =
20. 20.235 − 59 =
21. 21.158 − 96 =
22. 22.92 − 56 =
23. 23.510 − 48 =
24. 24.124 − 98 =
25. 25.208 − 78 =
26. 26.171 − 57 =
27. 27.485 − 29 =
28. 28.151 − 59 =
29. 29.428 − 18 =
30. 30.105 − 77 =
31. 31.182 − 96 =
32. 32.158 − 57 =
33. 33.316 − 57 =
34. 34.376 − 79 =
35. 35.80 − 69 =
36. 36.150 − 26 =
37. 37.230 − 28 =
38. 38.307 − 46 =
39. 39.148 − 89 =
40. 40.273 − 29 =

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