Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 267 · 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. 1.0.33 × 0.7 — where does the decimal point go? (a) 2.31 (b) 0.231 (c) 0.00231 (d) 0.0231
2. 2.0.44 × 0.4 — where does the decimal point go? (a) 1.76 (b) 0.00176 (c) 0.176 (d) 0.0176
3. 3.9.3 × 9 — where does the decimal point go? (a) 0.837 (b) 837 (c) 8.37 (d) 83.7
4. 4.7.6 × 29 — where does the decimal point go? (a) 2.204 (b) 220.4 (c) 22.04 (d) 2204
5. 5.6.2 × 6 — where does the decimal point go? (a) 37.2 (b) 372 (c) 3.72 (d) 0.372
6. 6.4.9 × 0.6 — where does the decimal point go? (a) 0.0294 (b) 29.4 (c) 2.94 (d) 0.294
7. 7.4.2 × 7 — where does the decimal point go? (a) 294 (b) 0.294 (c) 2.94 (d) 29.4
8. 8.2.8 × 4.9 — where does the decimal point go? (a) 0.1372 (b) 1.372 (c) 13.72 (d) 137.2
9. 9.1.3 × 0.4 — where does the decimal point go? (a) 0.0052 (b) 0.052 (c) 0.52 (d) 5.2
10. 10.0.39 × 9 — where does the decimal point go? (a) 0.351 (b) 3.51 (c) 0.0351 (d) 35.1
11. 11.0.77 × 6 — where does the decimal point go? (a) 0.0462 (b) 4.62 (c) 0.462 (d) 46.2
12. 12.0.24 × 1.1 — where does the decimal point go? (a) 2.64 (b) 0.00264 (c) 0.0264 (d) 0.264
13. 13.4.7 × 25 — where does the decimal point go? (a) 1175 (b) 11.75 (c) 1.175 (d) 117.5
14. 14.3.2 × 17 — where does the decimal point go? (a) 0.544 (b) 544 (c) 5.44 (d) 54.4
15. 15.0.23 × 0.9 — where does the decimal point go? (a) 0.0207 (b) 2.07 (c) 0.207 (d) 0.00207
16. 16.7.4 × 4 — where does the decimal point go? (a) 29.6 (b) 2.96 (c) 0.296 (d) 296
17. 17.1.5 × 41 — where does the decimal point go? (a) 615 (b) 0.615 (c) 6.15 (d) 61.5
18. 18.4.7 × 6 — where does the decimal point go? (a) 2.82 (b) 282 (c) 0.282 (d) 28.2
19. 19.0.59 × 0.4 — where does the decimal point go? (a) 0.0236 (b) 0.236 (c) 0.00236 (d) 2.36
20. 20.7.8 × 26 — where does the decimal point go? (a) 2.028 (b) 202.8 (c) 2028 (d) 20.28
21. 21.9.6 × 7 — where does the decimal point go? (a) 67.2 (b) 6.72 (c) 0.672 (d) 672
22. 22.9.2 × 22 — where does the decimal point go? (a) 202.4 (b) 2024 (c) 20.24 (d) 2.024
23. 23.5.7 × 42 — where does the decimal point go? (a) 239.4 (b) 2394 (c) 23.94 (d) 2.394
24. 24.5.1 × 9 — where does the decimal point go? (a) 459 (b) 4.59 (c) 0.459 (d) 45.9
25. 25.1.2 × 1.2 — where does the decimal point go? (a) 14.4 (b) 0.144 (c) 1.44 (d) 0.0144
26. 26.0.19 × 4.9 — where does the decimal point go? (a) 0.0931 (b) 9.31 (c) 0.00931 (d) 0.931
27. 27.3.8 × 2.1 — where does the decimal point go? (a) 79.8 (b) 7.98 (c) 0.798 (d) 0.0798
28. 28.1.8 × 9 — where does the decimal point go? (a) 1.62 (b) 162 (c) 0.162 (d) 16.2
29. 29.0.89 × 0.7 — where does the decimal point go? (a) 0.623 (b) 0.0623 (c) 0.00623 (d) 6.23
30. 30.0.81 × 2.2 — where does the decimal point go? (a) 0.1782 (b) 0.01782 (c) 17.82 (d) 1.782
31. 31.0.73 × 6 — where does the decimal point go? (a) 0.438 (b) 4.38 (c) 0.0438 (d) 43.8
32. 32.0.67 × 2 — where does the decimal point go? (a) 0.134 (b) 1.34 (c) 13.4 (d) 0.0134
33. 33.0.75 × 0.7 — where does the decimal point go? (a) 0.00525 (b) 0.0525 (c) 5.25 (d) 0.525
34. 34.0.61 × 2.2 — where does the decimal point go? (a) 13.42 (b) 1.342 (c) 0.01342 (d) 0.1342
35. 35.6.8 × 3 — where does the decimal point go? (a) 0.204 (b) 2.04 (c) 204 (d) 20.4
36. 36.0.34 × 0.7 — where does the decimal point go? (a) 0.238 (b) 0.00238 (c) 2.38 (d) 0.0238
37. 37.0.16 × 0.6 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 0.0096 (d) 0.00096
38. 38.0.71 × 34 — where does the decimal point go? (a) 24.14 (b) 2.414 (c) 241.4 (d) 0.2414
39. 39.8.9 × 9 — where does the decimal point go? (a) 80.1 (b) 8.01 (c) 0.801 (d) 801
40. 40.1.9 × 34 — where does the decimal point go? (a) 64.6 (b) 646 (c) 6.46 (d) 0.646

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