Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 881 · 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. 1.199 − 17 =
2. 2.284 − 67 =
3. 3.434 − 98 =
4. 4.61 − 17 =
5. 5.234 − 16 =
6. 6.289 − 16 =
7. 7.276 − 38 =
8. 8.533 − 66 =
9. 9.388 − 29 =
10. 10.399 − 79 =
11. 11.266 − 19 =
12. 12.163 − 47 =
13. 13.303 − 66 =
14. 14.590 − 96 =
15. 15.161 − 69 =
16. 16.110 − 28 =
17. 17.249 − 16 =
18. 18.219 − 66 =
19. 19.553 − 37 =
20. 20.430 − 19 =
21. 21.98 − 37 =
22. 22.386 − 59 =
23. 23.317 − 68 =
24. 24.338 − 46 =
25. 25.213 − 87 =
26. 26.274 − 86 =
27. 27.353 − 17 =
28. 28.517 − 36 =
29. 29.318 − 18 =
30. 30.208 − 18 =
31. 31.539 − 57 =
32. 32.179 − 78 =
33. 33.311 − 59 =
34. 34.83 − 38 =
35. 35.203 − 77 =
36. 36.273 − 57 =
37. 37.271 − 69 =
38. 38.391 − 66 =
39. 39.477 − 88 =
40. 40.573 − 48 =

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