Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 636 · 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. 1.355 − 18 =
2. 2.530 − 76 =
3. 3.330 − 58 =
4. 4.241 − 19 =
5. 5.426 − 67 =
6. 6.516 − 17 =
7. 7.429 − 19 =
8. 8.316 − 49 =
9. 9.418 − 76 =
10. 10.425 − 79 =
11. 11.199 − 56 =
12. 12.455 − 67 =
13. 13.206 − 47 =
14. 14.171 − 77 =
15. 15.198 − 16 =
16. 16.181 − 77 =
17. 17.243 − 19 =
18. 18.142 − 29 =
19. 19.347 − 29 =
20. 20.189 − 17 =
21. 21.76 − 57 =
22. 22.174 − 97 =
23. 23.80 − 56 =
24. 24.280 − 26 =
25. 25.198 − 27 =
26. 26.451 − 49 =
27. 27.339 − 26 =
28. 28.339 − 57 =
29. 29.238 − 67 =
30. 30.333 − 39 =
31. 31.165 − 67 =
32. 32.232 − 47 =
33. 33.143 − 59 =
34. 34.186 − 56 =
35. 35.448 − 26 =
36. 36.345 − 47 =
37. 37.211 − 37 =
38. 38.327 − 36 =
39. 39.409 − 26 =
40. 40.179 − 77 =

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