Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 972 · 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. 1.470 − 87 =
2. 2.346 − 47 =
3. 3.58 − 46 =
4. 4.435 − 77 =
5. 5.219 − 57 =
6. 6.283 − 96 =
7. 7.535 − 27 =
8. 8.110 − 36 =
9. 9.486 − 77 =
10. 10.183 − 99 =
11. 11.426 − 46 =
12. 12.404 − 59 =
13. 13.117 − 79 =
14. 14.87 − 77 =
15. 15.146 − 78 =
16. 16.308 − 69 =
17. 17.231 − 79 =
18. 18.376 − 79 =
19. 19.283 − 86 =
20. 20.372 − 56 =
21. 21.593 − 67 =
22. 22.577 − 88 =
23. 23.224 − 79 =
24. 24.255 − 19 =
25. 25.179 − 86 =
26. 26.59 − 27 =
27. 27.191 − 86 =
28. 28.532 − 19 =
29. 29.229 − 19 =
30. 30.214 − 56 =
31. 31.179 − 79 =
32. 32.148 − 86 =
33. 33.343 − 46 =
34. 34.179 − 59 =
35. 35.97 − 49 =
36. 36.337 − 96 =
37. 37.266 − 26 =
38. 38.387 − 36 =
39. 39.256 − 66 =
40. 40.52 − 29 =

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