Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 131 · 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. 1.278 − 59 =
2. 2.220 − 36 =
3. 3.163 − 79 =
4. 4.136 − 28 =
5. 5.209 − 39 =
6. 6.330 − 27 =
7. 7.94 − 27 =
8. 8.99 − 16 =
9. 9.543 − 86 =
10. 10.362 − 79 =
11. 11.219 − 87 =
12. 12.562 − 69 =
13. 13.564 − 89 =
14. 14.287 − 26 =
15. 15.389 − 38 =
16. 16.293 − 88 =
17. 17.596 − 46 =
18. 18.185 − 36 =
19. 19.554 − 57 =
20. 20.80 − 59 =
21. 21.395 − 26 =
22. 22.86 − 18 =
23. 23.361 − 46 =
24. 24.438 − 47 =
25. 25.197 − 48 =
26. 26.183 − 96 =
27. 27.200 − 66 =
28. 28.328 − 27 =
29. 29.236 − 18 =
30. 30.295 − 28 =
31. 31.84 − 17 =
32. 32.141 − 57 =
33. 33.307 − 16 =
34. 34.376 − 57 =
35. 35.299 − 59 =
36. 36.455 − 18 =
37. 37.231 − 39 =
38. 38.312 − 96 =
39. 39.162 − 69 =
40. 40.87 − 58 =

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