Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 842 · 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. 1.564 − 56 =
2. 2.123 − 48 =
3. 3.164 − 87 =
4. 4.490 − 99 =
5. 5.599 − 27 =
6. 6.85 − 37 =
7. 7.281 − 86 =
8. 8.202 − 48 =
9. 9.563 − 56 =
10. 10.434 − 28 =
11. 11.347 − 28 =
12. 12.301 − 96 =
13. 13.391 − 56 =
14. 14.85 − 18 =
15. 15.246 − 57 =
16. 16.390 − 26 =
17. 17.266 − 56 =
18. 18.207 − 27 =
19. 19.303 − 16 =
20. 20.285 − 26 =
21. 21.147 − 58 =
22. 22.239 − 88 =
23. 23.563 − 58 =
24. 24.163 − 16 =
25. 25.198 − 87 =
26. 26.588 − 28 =
27. 27.419 − 76 =
28. 28.284 − 77 =
29. 29.274 − 66 =
30. 30.288 − 19 =
31. 31.453 − 26 =
32. 32.473 − 36 =
33. 33.101 − 39 =
34. 34.241 − 86 =
35. 35.287 − 18 =
36. 36.498 − 56 =
37. 37.310 − 36 =
38. 38.390 − 46 =
39. 39.247 − 96 =
40. 40.181 − 58 =

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