Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 169 · 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. 1.551 − 36 =
2. 2.594 − 38 =
3. 3.239 − 18 =
4. 4.546 − 19 =
5. 5.479 − 77 =
6. 6.166 − 36 =
7. 7.376 − 98 =
8. 8.125 − 37 =
9. 9.131 − 66 =
10. 10.203 − 88 =
11. 11.246 − 37 =
12. 12.383 − 77 =
13. 13.163 − 77 =
14. 14.264 − 57 =
15. 15.144 − 56 =
16. 16.461 − 46 =
17. 17.488 − 36 =
18. 18.291 − 19 =
19. 19.427 − 57 =
20. 20.519 − 26 =
21. 21.149 − 69 =
22. 22.216 − 16 =
23. 23.235 − 17 =
24. 24.403 − 39 =
25. 25.108 − 78 =
26. 26.118 − 27 =
27. 27.320 − 17 =
28. 28.390 − 66 =
29. 29.201 − 18 =
30. 30.595 − 99 =
31. 31.121 − 69 =
32. 32.358 − 19 =
33. 33.184 − 46 =
34. 34.488 − 98 =
35. 35.385 − 26 =
36. 36.281 − 46 =
37. 37.196 − 16 =
38. 38.394 − 28 =
39. 39.121 − 76 =
40. 40.512 − 86 =

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