Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 889 · 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. 1.123 − 46 =
2. 2.337 − 57 =
3. 3.341 − 86 =
4. 4.492 − 66 =
5. 5.473 − 69 =
6. 6.524 − 19 =
7. 7.171 − 89 =
8. 8.302 − 87 =
9. 9.115 − 69 =
10. 10.390 − 27 =
11. 11.90 − 18 =
12. 12.290 − 79 =
13. 13.427 − 26 =
14. 14.212 − 46 =
15. 15.547 − 58 =
16. 16.481 − 27 =
17. 17.151 − 58 =
18. 18.56 − 48 =
19. 19.535 − 87 =
20. 20.518 − 78 =
21. 21.302 − 99 =
22. 22.170 − 96 =
23. 23.168 − 97 =
24. 24.363 − 46 =
25. 25.559 − 57 =
26. 26.316 − 28 =
27. 27.188 − 66 =
28. 28.219 − 66 =
29. 29.538 − 16 =
30. 30.195 − 59 =
31. 31.455 − 49 =
32. 32.451 − 56 =
33. 33.381 − 76 =
34. 34.153 − 16 =
35. 35.360 − 97 =
36. 36.529 − 88 =
37. 37.475 − 99 =
38. 38.162 − 47 =
39. 39.371 − 87 =
40. 40.266 − 89 =

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