Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 902 · 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. 1.482 − 39 =
2. 2.444 − 16 =
3. 3.572 − 59 =
4. 4.193 − 28 =
5. 5.599 − 17 =
6. 6.187 − 69 =
7. 7.224 − 57 =
8. 8.380 − 76 =
9. 9.127 − 59 =
10. 10.228 − 29 =
11. 11.564 − 98 =
12. 12.328 − 77 =
13. 13.341 − 38 =
14. 14.566 − 87 =
15. 15.251 − 18 =
16. 16.568 − 49 =
17. 17.314 − 17 =
18. 18.456 − 58 =
19. 19.402 − 37 =
20. 20.277 − 38 =
21. 21.321 − 77 =
22. 22.92 − 88 =
23. 23.408 − 86 =
24. 24.353 − 47 =
25. 25.573 − 26 =
26. 26.536 − 68 =
27. 27.231 − 47 =
28. 28.128 − 28 =
29. 29.127 − 18 =
30. 30.78 − 19 =
31. 31.176 − 47 =
32. 32.520 − 48 =
33. 33.104 − 17 =
34. 34.372 − 67 =
35. 35.164 − 86 =
36. 36.58 − 48 =
37. 37.585 − 57 =
38. 38.439 − 87 =
39. 39.449 − 16 =
40. 40.117 − 68 =

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