Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 678 · 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. 1.538 − 27 =
2. 2.311 − 16 =
3. 3.526 − 68 =
4. 4.208 − 29 =
5. 5.231 − 79 =
6. 6.404 − 96 =
7. 7.304 − 49 =
8. 8.328 − 76 =
9. 9.155 − 96 =
10. 10.64 − 19 =
11. 11.456 − 96 =
12. 12.211 − 69 =
13. 13.462 − 39 =
14. 14.159 − 37 =
15. 15.595 − 58 =
16. 16.234 − 87 =
17. 17.400 − 27 =
18. 18.262 − 29 =
19. 19.354 − 57 =
20. 20.512 − 96 =
21. 21.261 − 87 =
22. 22.412 − 58 =
23. 23.174 − 39 =
24. 24.76 − 46 =
25. 25.232 − 28 =
26. 26.96 − 27 =
27. 27.211 − 36 =
28. 28.407 − 86 =
29. 29.276 − 18 =
30. 30.121 − 86 =
31. 31.75 − 56 =
32. 32.305 − 37 =
33. 33.184 − 28 =
34. 34.423 − 97 =
35. 35.215 − 16 =
36. 36.281 − 88 =
37. 37.243 − 86 =
38. 38.247 − 76 =
39. 39.489 − 27 =
40. 40.575 − 38 =

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