Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 930 · 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. 1.294 − 19 =
2. 2.255 − 67 =
3. 3.120 − 57 =
4. 4.296 − 76 =
5. 5.475 − 67 =
6. 6.212 − 17 =
7. 7.185 − 59 =
8. 8.242 − 36 =
9. 9.102 − 38 =
10. 10.110 − 17 =
11. 11.427 − 67 =
12. 12.314 − 97 =
13. 13.262 − 19 =
14. 14.503 − 99 =
15. 15.399 − 16 =
16. 16.497 − 97 =
17. 17.279 − 28 =
18. 18.195 − 57 =
19. 19.340 − 16 =
20. 20.303 − 46 =
21. 21.415 − 48 =
22. 22.444 − 86 =
23. 23.420 − 38 =
24. 24.284 − 48 =
25. 25.176 − 48 =
26. 26.388 − 49 =
27. 27.205 − 47 =
28. 28.173 − 16 =
29. 29.516 − 68 =
30. 30.476 − 49 =
31. 31.527 − 46 =
32. 32.262 − 96 =
33. 33.480 − 37 =
34. 34.229 − 18 =
35. 35.305 − 79 =
36. 36.255 − 98 =
37. 37.402 − 67 =
38. 38.408 − 29 =
39. 39.323 − 68 =
40. 40.484 − 19 =

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