Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 596 · 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. 1.370 − 87 =
2. 2.190 − 86 =
3. 3.151 − 38 =
4. 4.574 − 79 =
5. 5.405 − 26 =
6. 6.351 − 88 =
7. 7.472 − 68 =
8. 8.125 − 48 =
9. 9.273 − 37 =
10. 10.122 − 67 =
11. 11.381 − 27 =
12. 12.182 − 39 =
13. 13.383 − 66 =
14. 14.517 − 39 =
15. 15.215 − 17 =
16. 16.221 − 38 =
17. 17.115 − 99 =
18. 18.431 − 39 =
19. 19.248 − 76 =
20. 20.547 − 89 =
21. 21.464 − 29 =
22. 22.272 − 46 =
23. 23.566 − 48 =
24. 24.181 − 48 =
25. 25.127 − 38 =
26. 26.425 − 98 =
27. 27.464 − 56 =
28. 28.503 − 29 =
29. 29.356 − 88 =
30. 30.476 − 57 =
31. 31.476 − 48 =
32. 32.370 − 56 =
33. 33.273 − 68 =
34. 34.147 − 36 =
35. 35.241 − 29 =
36. 36.154 − 96 =
37. 37.212 − 19 =
38. 38.570 − 19 =
39. 39.240 − 26 =
40. 40.277 − 36 =

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