Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 43 · 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. 1.72 − 16 =
2. 2.93 − 26 =
3. 3.179 − 39 =
4. 4.399 − 57 =
5. 5.487 − 89 =
6. 6.516 − 67 =
7. 7.443 − 29 =
8. 8.289 − 18 =
9. 9.116 − 38 =
10. 10.138 − 96 =
11. 11.300 − 26 =
12. 12.175 − 88 =
13. 13.516 − 78 =
14. 14.114 − 96 =
15. 15.537 − 89 =
16. 16.219 − 66 =
17. 17.520 − 78 =
18. 18.598 − 57 =
19. 19.591 − 26 =
20. 20.160 − 68 =
21. 21.120 − 16 =
22. 22.593 − 79 =
23. 23.514 − 39 =
24. 24.596 − 68 =
25. 25.163 − 69 =
26. 26.375 − 78 =
27. 27.582 − 98 =
28. 28.216 − 88 =
29. 29.594 − 36 =
30. 30.568 − 37 =
31. 31.99 − 68 =
32. 32.203 − 78 =
33. 33.134 − 16 =
34. 34.528 − 66 =
35. 35.283 − 18 =
36. 36.271 − 66 =
37. 37.405 − 27 =
38. 38.210 − 16 =
39. 39.487 − 36 =
40. 40.324 − 69 =

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