Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 262 · 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. 1.308 − 18 =
2. 2.529 − 26 =
3. 3.446 − 46 =
4. 4.113 − 27 =
5. 5.192 − 48 =
6. 6.550 − 48 =
7. 7.63 − 18 =
8. 8.130 − 86 =
9. 9.228 − 67 =
10. 10.174 − 77 =
11. 11.205 − 19 =
12. 12.200 − 87 =
13. 13.259 − 56 =
14. 14.281 − 86 =
15. 15.169 − 99 =
16. 16.373 − 77 =
17. 17.520 − 29 =
18. 18.456 − 67 =
19. 19.279 − 69 =
20. 20.212 − 46 =
21. 21.415 − 47 =
22. 22.131 − 97 =
23. 23.185 − 87 =
24. 24.536 − 29 =
25. 25.323 − 87 =
26. 26.425 − 19 =
27. 27.450 − 59 =
28. 28.450 − 59 =
29. 29.95 − 89 =
30. 30.492 − 49 =
31. 31.538 − 69 =
32. 32.283 − 98 =
33. 33.472 − 57 =
34. 34.536 − 28 =
35. 35.94 − 36 =
36. 36.506 − 96 =
37. 37.453 − 18 =
38. 38.340 − 18 =
39. 39.477 − 88 =
40. 40.462 − 36 =

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