Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 643 · 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. 1.410 − 76 =
2. 2.462 − 97 =
3. 3.397 − 77 =
4. 4.70 − 36 =
5. 5.401 − 17 =
6. 6.496 − 99 =
7. 7.374 − 17 =
8. 8.445 − 67 =
9. 9.276 − 68 =
10. 10.216 − 47 =
11. 11.165 − 16 =
12. 12.351 − 87 =
13. 13.475 − 16 =
14. 14.334 − 29 =
15. 15.318 − 29 =
16. 16.572 − 88 =
17. 17.325 − 89 =
18. 18.202 − 57 =
19. 19.354 − 17 =
20. 20.464 − 77 =
21. 21.293 − 86 =
22. 22.180 − 26 =
23. 23.208 − 58 =
24. 24.240 − 98 =
25. 25.543 − 39 =
26. 26.340 − 99 =
27. 27.210 − 16 =
28. 28.69 − 57 =
29. 29.486 − 57 =
30. 30.156 − 59 =
31. 31.96 − 68 =
32. 32.430 − 79 =
33. 33.172 − 76 =
34. 34.164 − 77 =
35. 35.426 − 88 =
36. 36.170 − 28 =
37. 37.178 − 98 =
38. 38.54 − 26 =
39. 39.199 − 46 =
40. 40.512 − 88 =

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