Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 386 · 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. 1.184 − 27 =
2. 2.533 − 57 =
3. 3.329 − 56 =
4. 4.304 − 19 =
5. 5.351 − 59 =
6. 6.336 − 39 =
7. 7.144 − 17 =
8. 8.523 − 78 =
9. 9.125 − 96 =
10. 10.413 − 58 =
11. 11.452 − 76 =
12. 12.376 − 79 =
13. 13.241 − 39 =
14. 14.143 − 19 =
15. 15.512 − 88 =
16. 16.109 − 77 =
17. 17.555 − 48 =
18. 18.243 − 29 =
19. 19.417 − 89 =
20. 20.92 − 76 =
21. 21.179 − 26 =
22. 22.333 − 77 =
23. 23.181 − 47 =
24. 24.438 − 77 =
25. 25.194 − 98 =
26. 26.160 − 36 =
27. 27.264 − 27 =
28. 28.128 − 37 =
29. 29.345 − 69 =
30. 30.420 − 46 =
31. 31.577 − 68 =
32. 32.421 − 38 =
33. 33.351 − 18 =
34. 34.139 − 18 =
35. 35.281 − 28 =
36. 36.176 − 96 =
37. 37.113 − 36 =
38. 38.167 − 17 =
39. 39.125 − 76 =
40. 40.220 − 77 =

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