Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 835 · 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. 1.78 − 49 =
2. 2.285 − 28 =
3. 3.448 − 46 =
4. 4.158 − 96 =
5. 5.499 − 37 =
6. 6.408 − 18 =
7. 7.220 − 47 =
8. 8.354 − 57 =
9. 9.400 − 89 =
10. 10.186 − 88 =
11. 11.275 − 36 =
12. 12.378 − 38 =
13. 13.450 − 86 =
14. 14.122 − 28 =
15. 15.169 − 89 =
16. 16.185 − 47 =
17. 17.433 − 37 =
18. 18.267 − 69 =
19. 19.525 − 59 =
20. 20.523 − 48 =
21. 21.306 − 16 =
22. 22.189 − 98 =
23. 23.593 − 77 =
24. 24.451 − 89 =
25. 25.198 − 69 =
26. 26.291 − 29 =
27. 27.368 − 49 =
28. 28.84 − 28 =
29. 29.598 − 28 =
30. 30.358 − 56 =
31. 31.380 − 26 =
32. 32.183 − 49 =
33. 33.558 − 86 =
34. 34.368 − 26 =
35. 35.164 − 77 =
36. 36.287 − 28 =
37. 37.417 − 79 =
38. 38.276 − 28 =
39. 39.592 − 87 =
40. 40.85 − 19 =

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