Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 445 · 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 × 0.3 — where does the decimal point go? (a) 0.153 (b) 15.3 (c) 1.53 (d) 0.0153
2. 2.5.1 × 28 — where does the decimal point go? (a) 1.428 (b) 142.8 (c) 1428 (d) 14.28
3. 3.9.1 × 0.4 — where does the decimal point go? (a) 0.0364 (b) 3.64 (c) 0.364 (d) 36.4
4. 4.0.52 × 0.9 — where does the decimal point go? (a) 0.00468 (b) 0.468 (c) 4.68 (d) 0.0468
5. 5.0.38 × 48 — where does the decimal point go? (a) 18.24 (b) 0.1824 (c) 182.4 (d) 1.824
6. 6.0.12 × 46 — where does the decimal point go? (a) 0.552 (b) 5.52 (c) 55.2 (d) 0.0552
7. 7.0.92 × 0.4 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 0.00368 (d) 0.0368
8. 8.9.1 × 1.2 — where does the decimal point go? (a) 0.1092 (b) 10.92 (c) 109.2 (d) 1.092
9. 9.0.16 × 24 — where does the decimal point go? (a) 0.384 (b) 38.4 (c) 0.0384 (d) 3.84
10. 10.2.3 × 2 — where does the decimal point go? (a) 0.046 (b) 4.6 (c) 0.46 (d) 46
11. 11.1.2 × 1.4 — where does the decimal point go? (a) 0.168 (b) 1.68 (c) 0.0168 (d) 16.8
12. 12.4.1 × 44 — where does the decimal point go? (a) 18.04 (b) 1804 (c) 180.4 (d) 1.804
13. 13.9.2 × 2 — where does the decimal point go? (a) 184 (b) 0.184 (c) 1.84 (d) 18.4
14. 14.6.2 × 13 — where does the decimal point go? (a) 0.806 (b) 80.6 (c) 806 (d) 8.06
15. 15.0.13 × 46 — where does the decimal point go? (a) 0.0598 (b) 59.8 (c) 0.598 (d) 5.98
16. 16.2.5 × 4.5 — where does the decimal point go? (a) 1.125 (b) 11.25 (c) 0.1125 (d) 112.5
17. 17.0.56 × 4.1 — where does the decimal point go? (a) 22.96 (b) 0.2296 (c) 2.296 (d) 0.02296
18. 18.0.48 × 2.7 — where does the decimal point go? (a) 0.01296 (b) 12.96 (c) 0.1296 (d) 1.296
19. 19.0.31 × 2.2 — where does the decimal point go? (a) 0.682 (b) 0.0682 (c) 0.00682 (d) 6.82
20. 20.2.6 × 2.2 — where does the decimal point go? (a) 0.572 (b) 57.2 (c) 0.0572 (d) 5.72
21. 21.0.24 × 4.9 — where does the decimal point go? (a) 0.1176 (b) 1.176 (c) 0.01176 (d) 11.76
22. 22.0.75 × 17 — where does the decimal point go? (a) 12.75 (b) 0.1275 (c) 1.275 (d) 127.5
23. 23.7.4 × 31 — where does the decimal point go? (a) 229.4 (b) 2294 (c) 2.294 (d) 22.94
24. 24.5.6 × 0.8 — where does the decimal point go? (a) 0.448 (b) 4.48 (c) 44.8 (d) 0.0448
25. 25.0.37 × 2.9 — where does the decimal point go? (a) 1.073 (b) 0.1073 (c) 0.01073 (d) 10.73
26. 26.0.77 × 4 — where does the decimal point go? (a) 0.308 (b) 30.8 (c) 0.0308 (d) 3.08
27. 27.7.7 × 39 — where does the decimal point go? (a) 3.003 (b) 300.3 (c) 30.03 (d) 3003
28. 28.5.3 × 2.2 — where does the decimal point go? (a) 1.166 (b) 11.66 (c) 116.6 (d) 0.1166
29. 29.1.2 × 4.9 — where does the decimal point go? (a) 58.8 (b) 0.0588 (c) 5.88 (d) 0.588
30. 30.0.55 × 37 — where does the decimal point go? (a) 0.2035 (b) 203.5 (c) 2.035 (d) 20.35
31. 31.9.2 × 26 — where does the decimal point go? (a) 239.2 (b) 23.92 (c) 2.392 (d) 2392
32. 32.0.29 × 42 — where does the decimal point go? (a) 12.18 (b) 0.1218 (c) 1.218 (d) 121.8
33. 33.9.6 × 8 — where does the decimal point go? (a) 76.8 (b) 7.68 (c) 0.768 (d) 768
34. 34.4.8 × 3 — where does the decimal point go? (a) 144 (b) 0.144 (c) 14.4 (d) 1.44
35. 35.1.8 × 36 — where does the decimal point go? (a) 6.48 (b) 0.648 (c) 64.8 (d) 648
36. 36.2.6 × 1.7 — where does the decimal point go? (a) 4.42 (b) 44.2 (c) 0.442 (d) 0.0442
37. 37.6.7 × 21 — where does the decimal point go? (a) 140.7 (b) 1.407 (c) 1407 (d) 14.07
38. 38.0.82 × 8 — where does the decimal point go? (a) 0.0656 (b) 6.56 (c) 65.6 (d) 0.656
39. 39.0.28 × 6 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 0.0168 (d) 16.8
40. 40.0.56 × 4.9 — where does the decimal point go? (a) 27.44 (b) 0.2744 (c) 2.744 (d) 0.02744

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