Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 722 · 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. 1.0.77 × 5 — where does the decimal point go? (a) 0.385 (b) 0.0385 (c) 38.5 (d) 3.85
2. 2.0.17 × 0.8 — where does the decimal point go? (a) 0.0136 (b) 0.00136 (c) 1.36 (d) 0.136
3. 3.7.7 × 0.4 — where does the decimal point go? (a) 0.0308 (b) 3.08 (c) 0.308 (d) 30.8
4. 4.5.6 × 0.7 — where does the decimal point go? (a) 0.0392 (b) 0.392 (c) 39.2 (d) 3.92
5. 5.0.45 × 0.3 — where does the decimal point go? (a) 0.135 (b) 1.35 (c) 0.00135 (d) 0.0135
6. 6.3.3 × 6 — where does the decimal point go? (a) 1.98 (b) 198 (c) 19.8 (d) 0.198
7. 7.0.25 × 3.5 — where does the decimal point go? (a) 0.00875 (b) 8.75 (c) 0.0875 (d) 0.875
8. 8.0.13 × 4 — where does the decimal point go? (a) 0.0052 (b) 0.52 (c) 5.2 (d) 0.052
9. 9.0.17 × 3.7 — where does the decimal point go? (a) 6.29 (b) 0.629 (c) 0.0629 (d) 0.00629
10. 10.0.56 × 0.3 — where does the decimal point go? (a) 0.0168 (b) 1.68 (c) 0.168 (d) 0.00168
11. 11.0.71 × 3 — where does the decimal point go? (a) 0.213 (b) 2.13 (c) 0.0213 (d) 21.3
12. 12.0.28 × 1.2 — where does the decimal point go? (a) 3.36 (b) 0.336 (c) 0.0336 (d) 0.00336
13. 13.3.7 × 4 — where does the decimal point go? (a) 1.48 (b) 0.148 (c) 148 (d) 14.8
14. 14.5.1 × 8 — where does the decimal point go? (a) 0.408 (b) 408 (c) 40.8 (d) 4.08
15. 15.3.1 × 8 — where does the decimal point go? (a) 2.48 (b) 0.248 (c) 24.8 (d) 248
16. 16.8.6 × 9 — where does the decimal point go? (a) 77.4 (b) 7.74 (c) 774 (d) 0.774
17. 17.5.3 × 0.3 — where does the decimal point go? (a) 1.59 (b) 15.9 (c) 0.0159 (d) 0.159
18. 18.4.7 × 34 — where does the decimal point go? (a) 1.598 (b) 15.98 (c) 1598 (d) 159.8
19. 19.8.1 × 1.5 — where does the decimal point go? (a) 0.1215 (b) 121.5 (c) 1.215 (d) 12.15
20. 20.0.14 × 0.3 — where does the decimal point go? (a) 0.0042 (b) 0.042 (c) 0.42 (d) 0.00042
21. 21.9.8 × 16 — where does the decimal point go? (a) 156.8 (b) 1.568 (c) 1568 (d) 15.68
22. 22.0.76 × 4.6 — where does the decimal point go? (a) 3.496 (b) 0.3496 (c) 34.96 (d) 0.03496
23. 23.0.18 × 22 — where does the decimal point go? (a) 0.396 (b) 39.6 (c) 0.0396 (d) 3.96
24. 24.6.2 × 4.8 — where does the decimal point go? (a) 0.2976 (b) 2.976 (c) 29.76 (d) 297.6
25. 25.2.1 × 0.7 — where does the decimal point go? (a) 0.0147 (b) 1.47 (c) 0.147 (d) 14.7
26. 26.5.9 × 0.9 — where does the decimal point go? (a) 0.531 (b) 5.31 (c) 0.0531 (d) 53.1
27. 27.0.31 × 0.7 — where does the decimal point go? (a) 0.217 (b) 0.0217 (c) 2.17 (d) 0.00217
28. 28.8.4 × 1.3 — where does the decimal point go? (a) 10.92 (b) 1.092 (c) 109.2 (d) 0.1092
29. 29.9.5 × 0.7 — where does the decimal point go? (a) 0.665 (b) 6.65 (c) 66.5 (d) 0.0665
30. 30.3.8 × 0.2 — where does the decimal point go? (a) 0.076 (b) 7.6 (c) 0.0076 (d) 0.76
31. 31.0.15 × 3.3 — where does the decimal point go? (a) 0.495 (b) 4.95 (c) 0.00495 (d) 0.0495
32. 32.0.57 × 0.3 — where does the decimal point go? (a) 1.71 (b) 0.00171 (c) 0.171 (d) 0.0171
33. 33.0.23 × 3 — where does the decimal point go? (a) 0.069 (b) 0.0069 (c) 0.69 (d) 6.9
34. 34.3.7 × 4.5 — where does the decimal point go? (a) 16.65 (b) 166.5 (c) 1.665 (d) 0.1665
35. 35.2.6 × 9 — where does the decimal point go? (a) 2.34 (b) 23.4 (c) 0.234 (d) 234
36. 36.8.7 × 0.6 — where does the decimal point go? (a) 0.522 (b) 0.0522 (c) 5.22 (d) 52.2
37. 37.9.8 × 6 — where does the decimal point go? (a) 0.588 (b) 58.8 (c) 588 (d) 5.88
38. 38.1.6 × 0.9 — where does the decimal point go? (a) 14.4 (b) 0.0144 (c) 0.144 (d) 1.44
39. 39.0.51 × 0.6 — where does the decimal point go? (a) 0.00306 (b) 0.0306 (c) 0.306 (d) 3.06
40. 40.6.2 × 3.4 — where does the decimal point go? (a) 0.2108 (b) 2.108 (c) 21.08 (d) 210.8

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