Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 867 · 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. 1.220 − 29 =
2. 2.137 − 57 =
3. 3.394 − 78 =
4. 4.481 − 47 =
5. 5.452 − 57 =
6. 6.261 − 27 =
7. 7.132 − 39 =
8. 8.139 − 69 =
9. 9.261 − 86 =
10. 10.554 − 29 =
11. 11.280 − 26 =
12. 12.237 − 19 =
13. 13.126 − 57 =
14. 14.184 − 66 =
15. 15.578 − 76 =
16. 16.107 − 69 =
17. 17.404 − 67 =
18. 18.149 − 39 =
19. 19.104 − 19 =
20. 20.244 − 68 =
21. 21.493 − 98 =
22. 22.420 − 76 =
23. 23.267 − 46 =
24. 24.469 − 26 =
25. 25.534 − 97 =
26. 26.445 − 77 =
27. 27.588 − 76 =
28. 28.214 − 66 =
29. 29.346 − 86 =
30. 30.376 − 46 =
31. 31.540 − 86 =
32. 32.512 − 29 =
33. 33.79 − 58 =
34. 34.444 − 78 =
35. 35.408 − 79 =
36. 36.374 − 28 =
37. 37.260 − 56 =
38. 38.204 − 69 =
39. 39.399 − 77 =
40. 40.194 − 99 =

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