Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 925 · 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. 1.464 − 47 =
2. 2.203 − 27 =
3. 3.271 − 36 =
4. 4.452 − 76 =
5. 5.136 − 47 =
6. 6.72 − 48 =
7. 7.444 − 97 =
8. 8.57 − 46 =
9. 9.209 − 29 =
10. 10.106 − 16 =
11. 11.545 − 79 =
12. 12.437 − 69 =
13. 13.583 − 19 =
14. 14.556 − 49 =
15. 15.59 − 49 =
16. 16.202 − 16 =
17. 17.257 − 97 =
18. 18.90 − 77 =
19. 19.166 − 57 =
20. 20.118 − 79 =
21. 21.238 − 89 =
22. 22.423 − 26 =
23. 23.242 − 58 =
24. 24.488 − 99 =
25. 25.425 − 67 =
26. 26.133 − 29 =
27. 27.364 − 96 =
28. 28.513 − 48 =
29. 29.396 − 56 =
30. 30.356 − 86 =
31. 31.345 − 77 =
32. 32.174 − 46 =
33. 33.182 − 87 =
34. 34.341 − 77 =
35. 35.125 − 77 =
36. 36.529 − 56 =
37. 37.110 − 96 =
38. 38.592 − 26 =
39. 39.533 − 77 =
40. 40.166 − 69 =

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