Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 581 · 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. 1.374 − 68 =
2. 2.344 − 26 =
3. 3.504 − 98 =
4. 4.347 − 89 =
5. 5.305 − 28 =
6. 6.169 − 17 =
7. 7.447 − 67 =
8. 8.200 − 97 =
9. 9.356 − 68 =
10. 10.511 − 26 =
11. 11.409 − 66 =
12. 12.138 − 88 =
13. 13.242 − 48 =
14. 14.86 − 57 =
15. 15.582 − 48 =
16. 16.469 − 49 =
17. 17.542 − 97 =
18. 18.192 − 97 =
19. 19.500 − 37 =
20. 20.570 − 47 =
21. 21.271 − 68 =
22. 22.444 − 88 =
23. 23.256 − 46 =
24. 24.272 − 59 =
25. 25.129 − 29 =
26. 26.516 − 68 =
27. 27.163 − 69 =
28. 28.226 − 66 =
29. 29.119 − 89 =
30. 30.394 − 99 =
31. 31.550 − 98 =
32. 32.335 − 59 =
33. 33.399 − 97 =
34. 34.480 − 77 =
35. 35.194 − 48 =
36. 36.316 − 37 =
37. 37.53 − 36 =
38. 38.172 − 28 =
39. 39.152 − 66 =
40. 40.358 − 19 =

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