Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 178 · 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. 1.440 − 27 =
2. 2.483 − 46 =
3. 3.481 − 58 =
4. 4.100 − 46 =
5. 5.394 − 49 =
6. 6.178 − 16 =
7. 7.384 − 89 =
8. 8.178 − 57 =
9. 9.554 − 68 =
10. 10.245 − 26 =
11. 11.67 − 46 =
12. 12.452 − 67 =
13. 13.389 − 67 =
14. 14.451 − 27 =
15. 15.164 − 69 =
16. 16.333 − 77 =
17. 17.224 − 57 =
18. 18.398 − 37 =
19. 19.282 − 99 =
20. 20.185 − 96 =
21. 21.486 − 98 =
22. 22.151 − 99 =
23. 23.491 − 79 =
24. 24.577 − 89 =
25. 25.150 − 59 =
26. 26.164 − 57 =
27. 27.253 − 29 =
28. 28.176 − 86 =
29. 29.397 − 68 =
30. 30.201 − 89 =
31. 31.191 − 57 =
32. 32.363 − 27 =
33. 33.562 − 37 =
34. 34.541 − 39 =
35. 35.414 − 66 =
36. 36.203 − 88 =
37. 37.595 − 16 =
38. 38.465 − 57 =
39. 39.516 − 29 =
40. 40.167 − 46 =

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