Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 755 · 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. 1.340 − 19 =
2. 2.74 − 18 =
3. 3.521 − 68 =
4. 4.345 − 77 =
5. 5.316 − 66 =
6. 6.320 − 88 =
7. 7.422 − 19 =
8. 8.233 − 58 =
9. 9.466 − 86 =
10. 10.380 − 86 =
11. 11.121 − 17 =
12. 12.548 − 16 =
13. 13.357 − 27 =
14. 14.296 − 36 =
15. 15.513 − 38 =
16. 16.223 − 58 =
17. 17.145 − 46 =
18. 18.354 − 16 =
19. 19.422 − 19 =
20. 20.217 − 29 =
21. 21.339 − 98 =
22. 22.394 − 16 =
23. 23.446 − 99 =
24. 24.557 − 28 =
25. 25.129 − 16 =
26. 26.565 − 77 =
27. 27.152 − 96 =
28. 28.320 − 37 =
29. 29.359 − 89 =
30. 30.366 − 77 =
31. 31.495 − 86 =
32. 32.82 − 36 =
33. 33.76 − 39 =
34. 34.491 − 99 =
35. 35.314 − 57 =
36. 36.331 − 57 =
37. 37.449 − 48 =
38. 38.190 − 59 =
39. 39.200 − 49 =
40. 40.352 − 67 =

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