Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 578 · 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. 1.596 − 29 =
2. 2.562 − 67 =
3. 3.256 − 86 =
4. 4.100 − 16 =
5. 5.588 − 28 =
6. 6.171 − 78 =
7. 7.425 − 98 =
8. 8.471 − 47 =
9. 9.504 − 59 =
10. 10.517 − 99 =
11. 11.435 − 26 =
12. 12.435 − 46 =
13. 13.83 − 29 =
14. 14.176 − 16 =
15. 15.100 − 78 =
16. 16.335 − 57 =
17. 17.187 − 87 =
18. 18.290 − 59 =
19. 19.582 − 79 =
20. 20.399 − 56 =
21. 21.368 − 27 =
22. 22.251 − 67 =
23. 23.557 − 97 =
24. 24.490 − 29 =
25. 25.362 − 87 =
26. 26.509 − 76 =
27. 27.573 − 16 =
28. 28.417 − 96 =
29. 29.136 − 18 =
30. 30.356 − 67 =
31. 31.165 − 17 =
32. 32.441 − 39 =
33. 33.435 − 17 =
34. 34.359 − 56 =
35. 35.375 − 39 =
36. 36.167 − 86 =
37. 37.200 − 49 =
38. 38.353 − 39 =
39. 39.234 − 16 =
40. 40.78 − 38 =

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