Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 921 · 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. 1.223 − 76 =
2. 2.551 − 38 =
3. 3.563 − 88 =
4. 4.554 − 16 =
5. 5.102 − 67 =
6. 6.130 − 27 =
7. 7.90 − 16 =
8. 8.459 − 96 =
9. 9.428 − 36 =
10. 10.542 − 27 =
11. 11.359 − 27 =
12. 12.394 − 46 =
13. 13.153 − 37 =
14. 14.319 − 39 =
15. 15.231 − 19 =
16. 16.235 − 48 =
17. 17.533 − 26 =
18. 18.168 − 38 =
19. 19.458 − 38 =
20. 20.75 − 58 =
21. 21.370 − 56 =
22. 22.411 − 48 =
23. 23.256 − 48 =
24. 24.418 − 18 =
25. 25.364 − 76 =
26. 26.543 − 16 =
27. 27.577 − 39 =
28. 28.141 − 37 =
29. 29.335 − 49 =
30. 30.281 − 66 =
31. 31.143 − 76 =
32. 32.183 − 39 =
33. 33.230 − 99 =
34. 34.523 − 28 =
35. 35.305 − 98 =
36. 36.92 − 66 =
37. 37.115 − 16 =
38. 38.468 − 39 =
39. 39.360 − 49 =
40. 40.348 − 57 =

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