Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 378 · 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. 1.197 − 77 =
2. 2.589 − 37 =
3. 3.187 − 28 =
4. 4.556 − 36 =
5. 5.98 − 48 =
6. 6.159 − 29 =
7. 7.327 − 19 =
8. 8.435 − 47 =
9. 9.246 − 87 =
10. 10.589 − 29 =
11. 11.271 − 66 =
12. 12.368 − 29 =
13. 13.238 − 19 =
14. 14.539 − 87 =
15. 15.181 − 49 =
16. 16.199 − 36 =
17. 17.254 − 27 =
18. 18.110 − 16 =
19. 19.273 − 97 =
20. 20.312 − 38 =
21. 21.380 − 67 =
22. 22.583 − 47 =
23. 23.375 − 16 =
24. 24.545 − 27 =
25. 25.82 − 16 =
26. 26.432 − 17 =
27. 27.74 − 27 =
28. 28.74 − 26 =
29. 29.488 − 66 =
30. 30.573 − 66 =
31. 31.61 − 17 =
32. 32.486 − 77 =
33. 33.347 − 26 =
34. 34.184 − 86 =
35. 35.581 − 17 =
36. 36.101 − 39 =
37. 37.534 − 89 =
38. 38.158 − 77 =
39. 39.447 − 67 =
40. 40.358 − 26 =

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