Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 415 · 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. 1.0.34 × 0.7 — where does the decimal point go? (a) 2.38 (b) 0.0238 (c) 0.238 (d) 0.00238
2. 2.6.2 × 0.9 — where does the decimal point go? (a) 55.8 (b) 0.558 (c) 0.0558 (d) 5.58
3. 3.0.63 × 0.7 — where does the decimal point go? (a) 4.41 (b) 0.0441 (c) 0.441 (d) 0.00441
4. 4.7.6 × 4 — where does the decimal point go? (a) 304 (b) 3.04 (c) 30.4 (d) 0.304
5. 5.0.24 × 3 — where does the decimal point go? (a) 0.072 (b) 0.72 (c) 0.0072 (d) 7.2
6. 6.0.56 × 4 — where does the decimal point go? (a) 0.224 (b) 0.0224 (c) 2.24 (d) 22.4
7. 7.5.3 × 0.4 — where does the decimal point go? (a) 0.0212 (b) 0.212 (c) 2.12 (d) 21.2
8. 8.3.9 × 4.1 — where does the decimal point go? (a) 159.9 (b) 15.99 (c) 1.599 (d) 0.1599
9. 9.0.74 × 0.9 — where does the decimal point go? (a) 0.666 (b) 0.00666 (c) 0.0666 (d) 6.66
10. 10.1.7 × 0.7 — where does the decimal point go? (a) 0.0119 (b) 1.19 (c) 11.9 (d) 0.119
11. 11.0.96 × 14 — where does the decimal point go? (a) 134.4 (b) 13.44 (c) 1.344 (d) 0.1344
12. 12.4.4 × 9 — where does the decimal point go? (a) 39.6 (b) 3.96 (c) 0.396 (d) 396
13. 13.0.45 × 2.7 — where does the decimal point go? (a) 0.01215 (b) 12.15 (c) 1.215 (d) 0.1215
14. 14.0.35 × 49 — where does the decimal point go? (a) 0.1715 (b) 171.5 (c) 1.715 (d) 17.15
15. 15.3.1 × 4.4 — where does the decimal point go? (a) 0.1364 (b) 1.364 (c) 136.4 (d) 13.64
16. 16.3.7 × 2 — where does the decimal point go? (a) 0.74 (b) 74 (c) 0.074 (d) 7.4
17. 17.3.8 × 8 — where does the decimal point go? (a) 3.04 (b) 304 (c) 30.4 (d) 0.304
18. 18.7.7 × 5 — where does the decimal point go? (a) 385 (b) 38.5 (c) 3.85 (d) 0.385
19. 19.2.2 × 13 — where does the decimal point go? (a) 28.6 (b) 286 (c) 0.286 (d) 2.86
20. 20.0.71 × 0.4 — where does the decimal point go? (a) 0.0284 (b) 2.84 (c) 0.284 (d) 0.00284
21. 21.0.68 × 8 — where does the decimal point go? (a) 54.4 (b) 0.544 (c) 0.0544 (d) 5.44
22. 22.0.76 × 0.4 — where does the decimal point go? (a) 0.0304 (b) 0.00304 (c) 0.304 (d) 3.04
23. 23.0.39 × 45 — where does the decimal point go? (a) 175.5 (b) 17.55 (c) 0.1755 (d) 1.755
24. 24.0.86 × 37 — where does the decimal point go? (a) 318.2 (b) 31.82 (c) 3.182 (d) 0.3182
25. 25.7.2 × 0.3 — where does the decimal point go? (a) 0.216 (b) 2.16 (c) 0.0216 (d) 21.6
26. 26.0.54 × 0.9 — where does the decimal point go? (a) 0.00486 (b) 0.0486 (c) 4.86 (d) 0.486
27. 27.8.9 × 0.6 — where does the decimal point go? (a) 5.34 (b) 0.0534 (c) 53.4 (d) 0.534
28. 28.0.87 × 6 — where does the decimal point go? (a) 5.22 (b) 0.522 (c) 0.0522 (d) 52.2
29. 29.0.96 × 0.3 — where does the decimal point go? (a) 2.88 (b) 0.00288 (c) 0.0288 (d) 0.288
30. 30.5.7 × 9 — where does the decimal point go? (a) 51.3 (b) 5.13 (c) 0.513 (d) 513
31. 31.0.56 × 3.3 — where does the decimal point go? (a) 0.01848 (b) 0.1848 (c) 1.848 (d) 18.48
32. 32.3.9 × 17 — where does the decimal point go? (a) 66.3 (b) 663 (c) 0.663 (d) 6.63
33. 33.0.48 × 6 — where does the decimal point go? (a) 2.88 (b) 0.0288 (c) 28.8 (d) 0.288
34. 34.0.83 × 3.4 — where does the decimal point go? (a) 0.02822 (b) 2.822 (c) 0.2822 (d) 28.22
35. 35.6.7 × 1.9 — where does the decimal point go? (a) 12.73 (b) 1.273 (c) 127.3 (d) 0.1273
36. 36.0.57 × 8 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 45.6 (d) 0.0456
37. 37.5.6 × 2.4 — where does the decimal point go? (a) 0.1344 (b) 1.344 (c) 13.44 (d) 134.4
38. 38.0.27 × 36 — where does the decimal point go? (a) 97.2 (b) 0.0972 (c) 0.972 (d) 9.72
39. 39.9.9 × 19 — where does the decimal point go? (a) 18.81 (b) 1881 (c) 188.1 (d) 1.881
40. 40.3.8 × 0.6 — where does the decimal point go? (a) 0.228 (b) 22.8 (c) 2.28 (d) 0.0228

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