Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 296 · 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. 1.4.8 × 0.8 — where does the decimal point go? (a) 38.4 (b) 0.384 (c) 3.84 (d) 0.0384
2. 2.0.52 × 2.7 — where does the decimal point go? (a) 1.404 (b) 0.1404 (c) 0.01404 (d) 14.04
3. 3.0.99 × 1.8 — where does the decimal point go? (a) 1.782 (b) 0.01782 (c) 0.1782 (d) 17.82
4. 4.9.1 × 9 — where does the decimal point go? (a) 81.9 (b) 8.19 (c) 819 (d) 0.819
5. 5.3.8 × 1.9 — where does the decimal point go? (a) 0.722 (b) 72.2 (c) 0.0722 (d) 7.22
6. 6.3.3 × 0.6 — where does the decimal point go? (a) 1.98 (b) 19.8 (c) 0.198 (d) 0.0198
7. 7.4.8 × 7 — where does the decimal point go? (a) 336 (b) 33.6 (c) 0.336 (d) 3.36
8. 8.4.6 × 1.3 — where does the decimal point go? (a) 59.8 (b) 0.598 (c) 5.98 (d) 0.0598
9. 9.6.7 × 9 — where does the decimal point go? (a) 60.3 (b) 0.603 (c) 6.03 (d) 603
10. 10.7.7 × 4.8 — where does the decimal point go? (a) 36.96 (b) 369.6 (c) 0.3696 (d) 3.696
11. 11.0.87 × 1.5 — where does the decimal point go? (a) 1.305 (b) 0.1305 (c) 13.05 (d) 0.01305
12. 12.2.3 × 0.5 — where does the decimal point go? (a) 0.0115 (b) 11.5 (c) 1.15 (d) 0.115
13. 13.3.9 × 1.7 — where does the decimal point go? (a) 0.0663 (b) 66.3 (c) 6.63 (d) 0.663
14. 14.1.8 × 9 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 162 (d) 16.2
15. 15.5.3 × 21 — where does the decimal point go? (a) 1.113 (b) 1113 (c) 111.3 (d) 11.13
16. 16.0.29 × 0.5 — where does the decimal point go? (a) 0.145 (b) 0.0145 (c) 0.00145 (d) 1.45
17. 17.0.66 × 0.8 — where does the decimal point go? (a) 5.28 (b) 0.528 (c) 0.00528 (d) 0.0528
18. 18.0.21 × 0.8 — where does the decimal point go? (a) 0.168 (b) 0.00168 (c) 0.0168 (d) 1.68
19. 19.3.1 × 0.3 — where does the decimal point go? (a) 9.3 (b) 0.093 (c) 0.93 (d) 0.0093
20. 20.0.22 × 2 — where does the decimal point go? (a) 0.0044 (b) 0.044 (c) 0.44 (d) 4.4
21. 21.0.66 × 17 — where does the decimal point go? (a) 0.1122 (b) 11.22 (c) 1.122 (d) 112.2
22. 22.2.9 × 17 — where does the decimal point go? (a) 493 (b) 49.3 (c) 4.93 (d) 0.493
23. 23.8.6 × 19 — where does the decimal point go? (a) 1634 (b) 1.634 (c) 163.4 (d) 16.34
24. 24.5.5 × 7 — where does the decimal point go? (a) 38.5 (b) 0.385 (c) 385 (d) 3.85
25. 25.0.94 × 0.9 — where does the decimal point go? (a) 0.846 (b) 0.00846 (c) 8.46 (d) 0.0846
26. 26.4.5 × 0.3 — where does the decimal point go? (a) 1.35 (b) 0.135 (c) 0.0135 (d) 13.5
27. 27.4.2 × 7 — where does the decimal point go? (a) 0.294 (b) 29.4 (c) 2.94 (d) 294
28. 28.8.8 × 8 — where does the decimal point go? (a) 0.704 (b) 70.4 (c) 7.04 (d) 704
29. 29.0.13 × 5 — where does the decimal point go? (a) 0.0065 (b) 0.65 (c) 0.065 (d) 6.5
30. 30.0.73 × 0.4 — where does the decimal point go? (a) 0.292 (b) 0.0292 (c) 2.92 (d) 0.00292
31. 31.1.3 × 9 — where does the decimal point go? (a) 0.117 (b) 11.7 (c) 1.17 (d) 117
32. 32.0.22 × 1.8 — where does the decimal point go? (a) 0.396 (b) 3.96 (c) 0.0396 (d) 0.00396
33. 33.5.1 × 38 — where does the decimal point go? (a) 1938 (b) 1.938 (c) 193.8 (d) 19.38
34. 34.9.8 × 9 — where does the decimal point go? (a) 88.2 (b) 0.882 (c) 8.82 (d) 882
35. 35.8.2 × 0.3 — where does the decimal point go? (a) 0.246 (b) 24.6 (c) 0.0246 (d) 2.46
36. 36.1.2 × 0.3 — where does the decimal point go? (a) 0.0036 (b) 3.6 (c) 0.036 (d) 0.36
37. 37.0.17 × 4 — where does the decimal point go? (a) 0.068 (b) 6.8 (c) 0.68 (d) 0.0068
38. 38.0.22 × 23 — where does the decimal point go? (a) 0.506 (b) 0.0506 (c) 5.06 (d) 50.6
39. 39.0.33 × 45 — where does the decimal point go? (a) 1.485 (b) 0.1485 (c) 14.85 (d) 148.5
40. 40.0.66 × 3.4 — where does the decimal point go? (a) 22.44 (b) 0.2244 (c) 0.02244 (d) 2.244

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