Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 894 · 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. 1.471 − 79 =
2. 2.164 − 86 =
3. 3.587 − 36 =
4. 4.314 − 67 =
5. 5.81 − 56 =
6. 6.482 − 67 =
7. 7.438 − 68 =
8. 8.572 − 19 =
9. 9.277 − 76 =
10. 10.208 − 57 =
11. 11.557 − 56 =
12. 12.453 − 46 =
13. 13.451 − 16 =
14. 14.217 − 37 =
15. 15.586 − 58 =
16. 16.363 − 26 =
17. 17.283 − 97 =
18. 18.521 − 66 =
19. 19.110 − 87 =
20. 20.127 − 59 =
21. 21.129 − 46 =
22. 22.333 − 47 =
23. 23.404 − 16 =
24. 24.576 − 87 =
25. 25.294 − 79 =
26. 26.550 − 47 =
27. 27.571 − 17 =
28. 28.528 − 18 =
29. 29.444 − 18 =
30. 30.171 − 87 =
31. 31.256 − 89 =
32. 32.342 − 56 =
33. 33.306 − 49 =
34. 34.585 − 77 =
35. 35.260 − 56 =
36. 36.508 − 16 =
37. 37.501 − 28 =
38. 38.144 − 19 =
39. 39.572 − 59 =
40. 40.269 − 56 =

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