Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 791 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.5.1 × 0.6 — where does the decimal point go? (a) 30.6 (b) 0.306 (c) 0.0306 (d) 3.06
2. 2.0.68 × 6 — where does the decimal point go? (a) 0.408 (b) 0.0408 (c) 40.8 (d) 4.08
3. 3.5.4 × 9 — where does the decimal point go? (a) 48.6 (b) 0.486 (c) 486 (d) 4.86
4. 4.0.35 × 0.9 — where does the decimal point go? (a) 0.315 (b) 3.15 (c) 0.00315 (d) 0.0315
5. 5.9.6 × 21 — where does the decimal point go? (a) 20.16 (b) 2016 (c) 2.016 (d) 201.6
6. 6.8.4 × 2 — where does the decimal point go? (a) 168 (b) 0.168 (c) 1.68 (d) 16.8
7. 7.0.29 × 39 — where does the decimal point go? (a) 11.31 (b) 0.1131 (c) 113.1 (d) 1.131
8. 8.0.33 × 9 — where does the decimal point go? (a) 29.7 (b) 0.297 (c) 2.97 (d) 0.0297
9. 9.0.88 × 0.6 — where does the decimal point go? (a) 0.0528 (b) 5.28 (c) 0.528 (d) 0.00528
10. 10.8.8 × 0.4 — where does the decimal point go? (a) 35.2 (b) 0.352 (c) 3.52 (d) 0.0352
11. 11.1.3 × 26 — where does the decimal point go? (a) 33.8 (b) 0.338 (c) 3.38 (d) 338
12. 12.0.83 × 0.7 — where does the decimal point go? (a) 0.581 (b) 0.0581 (c) 0.00581 (d) 5.81
13. 13.0.28 × 0.2 — where does the decimal point go? (a) 0.00056 (b) 0.56 (c) 0.0056 (d) 0.056
14. 14.7.8 × 3 — where does the decimal point go? (a) 234 (b) 2.34 (c) 0.234 (d) 23.4
15. 15.0.79 × 3.4 — where does the decimal point go? (a) 0.2686 (b) 0.02686 (c) 26.86 (d) 2.686
16. 16.2.3 × 0.6 — where does the decimal point go? (a) 0.0138 (b) 0.138 (c) 13.8 (d) 1.38
17. 17.9.6 × 6 — where does the decimal point go? (a) 576 (b) 57.6 (c) 0.576 (d) 5.76
18. 18.0.74 × 0.4 — where does the decimal point go? (a) 0.00296 (b) 0.0296 (c) 2.96 (d) 0.296
19. 19.0.31 × 0.6 — where does the decimal point go? (a) 0.0186 (b) 0.186 (c) 0.00186 (d) 1.86
20. 20.7.2 × 4.4 — where does the decimal point go? (a) 31.68 (b) 3.168 (c) 316.8 (d) 0.3168
21. 21.0.68 × 4.4 — where does the decimal point go? (a) 29.92 (b) 0.2992 (c) 0.02992 (d) 2.992
22. 22.5.1 × 22 — where does the decimal point go? (a) 112.2 (b) 1122 (c) 1.122 (d) 11.22
23. 23.0.76 × 0.3 — where does the decimal point go? (a) 0.00228 (b) 0.0228 (c) 2.28 (d) 0.228
24. 24.0.93 × 1.1 — where does the decimal point go? (a) 0.1023 (b) 0.01023 (c) 10.23 (d) 1.023
25. 25.1.5 × 5 — where does the decimal point go? (a) 75 (b) 0.75 (c) 7.5 (d) 0.075
26. 26.0.55 × 3.3 — where does the decimal point go? (a) 1.815 (b) 0.01815 (c) 0.1815 (d) 18.15
27. 27.0.67 × 2.2 — where does the decimal point go? (a) 14.74 (b) 0.1474 (c) 0.01474 (d) 1.474
28. 28.0.47 × 0.3 — where does the decimal point go? (a) 0.141 (b) 0.00141 (c) 0.0141 (d) 1.41
29. 29.9.8 × 4.7 — where does the decimal point go? (a) 46.06 (b) 4.606 (c) 460.6 (d) 0.4606
30. 30.8.8 × 11 — where does the decimal point go? (a) 968 (b) 0.968 (c) 9.68 (d) 96.8
31. 31.0.73 × 7 — where does the decimal point go? (a) 0.511 (b) 0.0511 (c) 5.11 (d) 51.1
32. 32.0.41 × 0.4 — where does the decimal point go? (a) 1.64 (b) 0.00164 (c) 0.164 (d) 0.0164
33. 33.6.1 × 3.2 — where does the decimal point go? (a) 0.1952 (b) 1.952 (c) 195.2 (d) 19.52
34. 34.0.41 × 7 — where does the decimal point go? (a) 0.287 (b) 2.87 (c) 28.7 (d) 0.0287
35. 35.4.2 × 29 — where does the decimal point go? (a) 1.218 (b) 12.18 (c) 121.8 (d) 1218
36. 36.0.46 × 14 — where does the decimal point go? (a) 0.0644 (b) 64.4 (c) 6.44 (d) 0.644
37. 37.0.86 × 7 — where does the decimal point go? (a) 0.602 (b) 0.0602 (c) 60.2 (d) 6.02
38. 38.8.1 × 0.9 — where does the decimal point go? (a) 0.729 (b) 0.0729 (c) 72.9 (d) 7.29
39. 39.0.43 × 0.9 — where does the decimal point go? (a) 3.87 (b) 0.00387 (c) 0.387 (d) 0.0387
40. 40.1.3 × 1.3 — where does the decimal point go? (a) 0.0169 (b) 16.9 (c) 0.169 (d) 1.69

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