Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 624 · 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. 1.285 − 37 =
2. 2.579 − 78 =
3. 3.441 − 37 =
4. 4.426 − 77 =
5. 5.401 − 89 =
6. 6.65 − 19 =
7. 7.133 − 97 =
8. 8.344 − 27 =
9. 9.178 − 68 =
10. 10.208 − 38 =
11. 11.294 − 18 =
12. 12.280 − 16 =
13. 13.393 − 87 =
14. 14.420 − 69 =
15. 15.385 − 19 =
16. 16.96 − 17 =
17. 17.342 − 59 =
18. 18.351 − 89 =
19. 19.245 − 27 =
20. 20.270 − 88 =
21. 21.522 − 69 =
22. 22.290 − 47 =
23. 23.545 − 46 =
24. 24.220 − 96 =
25. 25.52 − 29 =
26. 26.142 − 17 =
27. 27.189 − 96 =
28. 28.271 − 89 =
29. 29.311 − 96 =
30. 30.439 − 48 =
31. 31.408 − 46 =
32. 32.387 − 36 =
33. 33.579 − 19 =
34. 34.210 − 86 =
35. 35.312 − 26 =
36. 36.305 − 18 =
37. 37.582 − 17 =
38. 38.494 − 27 =
39. 39.515 − 47 =
40. 40.160 − 68 =

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