Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 615 · 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 × 0.2 — where does the decimal point go? (a) 0.102 (b) 1.02 (c) 10.2 (d) 0.0102
2. 2.7.3 × 0.4 — where does the decimal point go? (a) 0.292 (b) 0.0292 (c) 2.92 (d) 29.2
3. 3.3.3 × 9 — where does the decimal point go? (a) 2.97 (b) 297 (c) 0.297 (d) 29.7
4. 4.0.34 × 13 — where does the decimal point go? (a) 44.2 (b) 0.0442 (c) 4.42 (d) 0.442
5. 5.0.88 × 9 — where does the decimal point go? (a) 7.92 (b) 0.792 (c) 0.0792 (d) 79.2
6. 6.0.71 × 8 — where does the decimal point go? (a) 0.568 (b) 0.0568 (c) 5.68 (d) 56.8
7. 7.0.59 × 3.2 — where does the decimal point go? (a) 1.888 (b) 18.88 (c) 0.1888 (d) 0.01888
8. 8.3.1 × 3 — where does the decimal point go? (a) 9.3 (b) 0.93 (c) 0.093 (d) 93
9. 9.0.25 × 31 — where does the decimal point go? (a) 0.775 (b) 0.0775 (c) 77.5 (d) 7.75
10. 10.2.7 × 1.7 — where does the decimal point go? (a) 0.0459 (b) 0.459 (c) 45.9 (d) 4.59
11. 11.7.7 × 3 — where does the decimal point go? (a) 23.1 (b) 2.31 (c) 231 (d) 0.231
12. 12.6.8 × 0.3 — where does the decimal point go? (a) 0.204 (b) 0.0204 (c) 20.4 (d) 2.04
13. 13.3.4 × 4.6 — where does the decimal point go? (a) 1.564 (b) 0.1564 (c) 156.4 (d) 15.64
14. 14.0.39 × 46 — where does the decimal point go? (a) 17.94 (b) 0.1794 (c) 1.794 (d) 179.4
15. 15.0.23 × 0.6 — where does the decimal point go? (a) 0.0138 (b) 0.00138 (c) 0.138 (d) 1.38
16. 16.0.76 × 0.7 — where does the decimal point go? (a) 0.0532 (b) 0.00532 (c) 0.532 (d) 5.32
17. 17.7.4 × 14 — where does the decimal point go? (a) 1.036 (b) 103.6 (c) 10.36 (d) 1036
18. 18.0.12 × 3.3 — where does the decimal point go? (a) 0.396 (b) 3.96 (c) 0.0396 (d) 0.00396
19. 19.3.3 × 47 — where does the decimal point go? (a) 1.551 (b) 1551 (c) 155.1 (d) 15.51
20. 20.0.82 × 0.7 — where does the decimal point go? (a) 0.574 (b) 0.0574 (c) 0.00574 (d) 5.74
21. 21.9.1 × 5 — where does the decimal point go? (a) 0.455 (b) 45.5 (c) 455 (d) 4.55
22. 22.0.64 × 0.6 — where does the decimal point go? (a) 3.84 (b) 0.384 (c) 0.00384 (d) 0.0384
23. 23.0.17 × 33 — where does the decimal point go? (a) 0.561 (b) 0.0561 (c) 56.1 (d) 5.61
24. 24.3.7 × 4.4 — where does the decimal point go? (a) 1.628 (b) 162.8 (c) 16.28 (d) 0.1628
25. 25.0.83 × 3 — where does the decimal point go? (a) 24.9 (b) 0.0249 (c) 0.249 (d) 2.49
26. 26.0.84 × 4.7 — where does the decimal point go? (a) 0.03948 (b) 0.3948 (c) 39.48 (d) 3.948
27. 27.6.8 × 3.1 — where does the decimal point go? (a) 2.108 (b) 210.8 (c) 0.2108 (d) 21.08
28. 28.7.9 × 0.3 — where does the decimal point go? (a) 0.0237 (b) 0.237 (c) 2.37 (d) 23.7
29. 29.0.99 × 0.3 — where does the decimal point go? (a) 0.0297 (b) 0.297 (c) 2.97 (d) 0.00297
30. 30.7.7 × 7 — where does the decimal point go? (a) 53.9 (b) 539 (c) 0.539 (d) 5.39
31. 31.0.86 × 0.7 — where does the decimal point go? (a) 0.0602 (b) 0.00602 (c) 0.602 (d) 6.02
32. 32.0.84 × 34 — where does the decimal point go? (a) 0.2856 (b) 285.6 (c) 2.856 (d) 28.56
33. 33.0.57 × 0.5 — where does the decimal point go? (a) 0.0285 (b) 0.00285 (c) 0.285 (d) 2.85
34. 34.3.3 × 1.1 — where does the decimal point go? (a) 0.363 (b) 0.0363 (c) 3.63 (d) 36.3
35. 35.0.86 × 31 — where does the decimal point go? (a) 2.666 (b) 0.2666 (c) 26.66 (d) 266.6
36. 36.2.8 × 2 — where does the decimal point go? (a) 0.56 (b) 5.6 (c) 0.056 (d) 56
37. 37.4.7 × 2.1 — where does the decimal point go? (a) 0.987 (b) 0.0987 (c) 98.7 (d) 9.87
38. 38.0.92 × 4 — where does the decimal point go? (a) 0.368 (b) 0.0368 (c) 3.68 (d) 36.8
39. 39.0.96 × 2 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 0.192 (d) 19.2
40. 40.0.88 × 13 — where does the decimal point go? (a) 114.4 (b) 11.44 (c) 0.1144 (d) 1.144

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