Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 723 · 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. 1.232 − 37 =
2. 2.137 − 17 =
3. 3.579 − 87 =
4. 4.276 − 68 =
5. 5.131 − 86 =
6. 6.243 − 26 =
7. 7.365 − 78 =
8. 8.59 − 36 =
9. 9.138 − 37 =
10. 10.594 − 77 =
11. 11.483 − 88 =
12. 12.272 − 96 =
13. 13.127 − 96 =
14. 14.381 − 46 =
15. 15.500 − 58 =
16. 16.334 − 27 =
17. 17.403 − 98 =
18. 18.88 − 76 =
19. 19.246 − 37 =
20. 20.203 − 16 =
21. 21.292 − 67 =
22. 22.376 − 79 =
23. 23.437 − 16 =
24. 24.371 − 18 =
25. 25.157 − 48 =
26. 26.86 − 66 =
27. 27.192 − 88 =
28. 28.100 − 29 =
29. 29.159 − 59 =
30. 30.534 − 39 =
31. 31.530 − 66 =
32. 32.261 − 39 =
33. 33.164 − 26 =
34. 34.585 − 38 =
35. 35.361 − 18 =
36. 36.371 − 76 =
37. 37.96 − 68 =
38. 38.145 − 47 =
39. 39.237 − 97 =
40. 40.146 − 88 =

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