Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 201 · 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. 1.501 − 86 =
2. 2.119 − 36 =
3. 3.352 − 76 =
4. 4.192 − 47 =
5. 5.217 − 26 =
6. 6.491 − 79 =
7. 7.169 − 89 =
8. 8.263 − 58 =
9. 9.568 − 37 =
10. 10.486 − 37 =
11. 11.199 − 87 =
12. 12.251 − 88 =
13. 13.122 − 46 =
14. 14.323 − 37 =
15. 15.230 − 58 =
16. 16.274 − 68 =
17. 17.565 − 29 =
18. 18.313 − 88 =
19. 19.256 − 98 =
20. 20.198 − 99 =
21. 21.461 − 69 =
22. 22.274 − 48 =
23. 23.310 − 96 =
24. 24.141 − 39 =
25. 25.565 − 79 =
26. 26.573 − 37 =
27. 27.396 − 87 =
28. 28.248 − 29 =
29. 29.303 − 49 =
30. 30.591 − 39 =
31. 31.205 − 49 =
32. 32.477 − 19 =
33. 33.150 − 39 =
34. 34.144 − 48 =
35. 35.436 − 39 =
36. 36.289 − 17 =
37. 37.91 − 67 =
38. 38.190 − 26 =
39. 39.200 − 98 =
40. 40.369 − 37 =

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