Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 272 · 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. 1.0.41 × 0.3 — where does the decimal point go? (a) 1.23 (b) 0.00123 (c) 0.0123 (d) 0.123
2. 2.6.8 × 4.3 — where does the decimal point go? (a) 292.4 (b) 2.924 (c) 29.24 (d) 0.2924
3. 3.0.88 × 33 — where does the decimal point go? (a) 290.4 (b) 2.904 (c) 29.04 (d) 0.2904
4. 4.0.56 × 0.4 — where does the decimal point go? (a) 0.0224 (b) 2.24 (c) 0.224 (d) 0.00224
5. 5.2.1 × 0.6 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.126 (d) 12.6
6. 6.0.76 × 18 — where does the decimal point go? (a) 13.68 (b) 136.8 (c) 0.1368 (d) 1.368
7. 7.0.97 × 5 — where does the decimal point go? (a) 4.85 (b) 0.485 (c) 0.0485 (d) 48.5
8. 8.6.1 × 0.3 — where does the decimal point go? (a) 0.0183 (b) 0.183 (c) 1.83 (d) 18.3
9. 9.4.3 × 12 — where does the decimal point go? (a) 51.6 (b) 0.516 (c) 516 (d) 5.16
10. 10.1.5 × 0.7 — where does the decimal point go? (a) 10.5 (b) 1.05 (c) 0.0105 (d) 0.105
11. 11.0.85 × 5 — where does the decimal point go? (a) 0.425 (b) 4.25 (c) 42.5 (d) 0.0425
12. 12.0.19 × 0.3 — where does the decimal point go? (a) 0.057 (b) 0.00057 (c) 0.0057 (d) 0.57
13. 13.2.4 × 0.6 — where does the decimal point go? (a) 0.144 (b) 0.0144 (c) 1.44 (d) 14.4
14. 14.0.88 × 4.7 — where does the decimal point go? (a) 4.136 (b) 41.36 (c) 0.04136 (d) 0.4136
15. 15.0.48 × 7 — where does the decimal point go? (a) 3.36 (b) 0.336 (c) 33.6 (d) 0.0336
16. 16.7.4 × 3 — where does the decimal point go? (a) 22.2 (b) 2.22 (c) 0.222 (d) 222
17. 17.5.3 × 3.4 — where does the decimal point go? (a) 1.802 (b) 0.1802 (c) 18.02 (d) 180.2
18. 18.1.9 × 45 — where does the decimal point go? (a) 8.55 (b) 0.855 (c) 85.5 (d) 855
19. 19.1.8 × 2.7 — where does the decimal point go? (a) 48.6 (b) 0.486 (c) 0.0486 (d) 4.86
20. 20.4.6 × 2.9 — where does the decimal point go? (a) 0.1334 (b) 133.4 (c) 1.334 (d) 13.34
21. 21.0.15 × 33 — where does the decimal point go? (a) 49.5 (b) 0.495 (c) 0.0495 (d) 4.95
22. 22.9.2 × 7 — where does the decimal point go? (a) 644 (b) 0.644 (c) 64.4 (d) 6.44
23. 23.0.26 × 36 — where does the decimal point go? (a) 0.936 (b) 0.0936 (c) 93.6 (d) 9.36
24. 24.4.1 × 4.4 — where does the decimal point go? (a) 18.04 (b) 180.4 (c) 1.804 (d) 0.1804
25. 25.0.83 × 0.2 — where does the decimal point go? (a) 1.66 (b) 0.166 (c) 0.0166 (d) 0.00166
26. 26.0.16 × 2.4 — where does the decimal point go? (a) 0.00384 (b) 3.84 (c) 0.0384 (d) 0.384
27. 27.0.29 × 3 — where does the decimal point go? (a) 0.0087 (b) 8.7 (c) 0.087 (d) 0.87
28. 28.0.99 × 4 — where does the decimal point go? (a) 3.96 (b) 0.396 (c) 0.0396 (d) 39.6
29. 29.0.15 × 23 — where does the decimal point go? (a) 0.0345 (b) 0.345 (c) 34.5 (d) 3.45
30. 30.7.2 × 7 — where does the decimal point go? (a) 0.504 (b) 504 (c) 50.4 (d) 5.04
31. 31.0.41 × 7 — where does the decimal point go? (a) 0.0287 (b) 2.87 (c) 0.287 (d) 28.7
32. 32.9.9 × 2 — where does the decimal point go? (a) 19.8 (b) 1.98 (c) 0.198 (d) 198
33. 33.9.3 × 2.6 — where does the decimal point go? (a) 24.18 (b) 241.8 (c) 2.418 (d) 0.2418
34. 34.9.4 × 0.2 — where does the decimal point go? (a) 0.0188 (b) 18.8 (c) 0.188 (d) 1.88
35. 35.7.7 × 0.2 — where does the decimal point go? (a) 1.54 (b) 15.4 (c) 0.154 (d) 0.0154
36. 36.1.9 × 1.6 — where does the decimal point go? (a) 30.4 (b) 0.0304 (c) 3.04 (d) 0.304
37. 37.0.64 × 31 — where does the decimal point go? (a) 1.984 (b) 198.4 (c) 0.1984 (d) 19.84
38. 38.0.61 × 3.8 — where does the decimal point go? (a) 0.02318 (b) 0.2318 (c) 23.18 (d) 2.318
39. 39.3.9 × 7 — where does the decimal point go? (a) 27.3 (b) 0.273 (c) 273 (d) 2.73
40. 40.3.9 × 0.8 — where does the decimal point go? (a) 0.0312 (b) 31.2 (c) 3.12 (d) 0.312

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