Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 958 · 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. 1.448 − 98 =
2. 2.389 − 47 =
3. 3.202 − 47 =
4. 4.577 − 87 =
5. 5.439 − 68 =
6. 6.129 − 68 =
7. 7.329 − 49 =
8. 8.481 − 66 =
9. 9.90 − 28 =
10. 10.591 − 87 =
11. 11.294 − 47 =
12. 12.521 − 79 =
13. 13.527 − 97 =
14. 14.146 − 88 =
15. 15.273 − 39 =
16. 16.417 − 17 =
17. 17.322 − 36 =
18. 18.406 − 88 =
19. 19.116 − 78 =
20. 20.256 − 49 =
21. 21.166 − 98 =
22. 22.197 − 17 =
23. 23.158 − 89 =
24. 24.261 − 57 =
25. 25.265 − 47 =
26. 26.176 − 98 =
27. 27.243 − 68 =
28. 28.341 − 66 =
29. 29.146 − 67 =
30. 30.448 − 77 =
31. 31.140 − 37 =
32. 32.336 − 69 =
33. 33.488 − 36 =
34. 34.120 − 99 =
35. 35.372 − 96 =
36. 36.565 − 26 =
37. 37.243 − 88 =
38. 38.543 − 16 =
39. 39.431 − 68 =
40. 40.545 − 59 =

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