Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 560 · 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. 1.1.3 × 7 — where does the decimal point go? (a) 0.91 (b) 0.091 (c) 9.1 (d) 91
2. 2.6.4 × 29 — where does the decimal point go? (a) 185.6 (b) 18.56 (c) 1856 (d) 1.856
3. 3.8.3 × 4 — where does the decimal point go? (a) 33.2 (b) 332 (c) 3.32 (d) 0.332
4. 4.2.2 × 4.6 — where does the decimal point go? (a) 101.2 (b) 10.12 (c) 0.1012 (d) 1.012
5. 5.0.92 × 1.9 — where does the decimal point go? (a) 1.748 (b) 0.1748 (c) 17.48 (d) 0.01748
6. 6.7.8 × 9 — where does the decimal point go? (a) 70.2 (b) 702 (c) 0.702 (d) 7.02
7. 7.4.1 × 0.3 — where does the decimal point go? (a) 1.23 (b) 0.0123 (c) 12.3 (d) 0.123
8. 8.0.74 × 0.3 — where does the decimal point go? (a) 2.22 (b) 0.00222 (c) 0.222 (d) 0.0222
9. 9.0.32 × 8 — where does the decimal point go? (a) 2.56 (b) 0.0256 (c) 0.256 (d) 25.6
10. 10.0.24 × 4.3 — where does the decimal point go? (a) 0.1032 (b) 10.32 (c) 1.032 (d) 0.01032
11. 11.2.4 × 0.2 — where does the decimal point go? (a) 0.48 (b) 0.0048 (c) 0.048 (d) 4.8
12. 12.3.2 × 46 — where does the decimal point go? (a) 147.2 (b) 14.72 (c) 1472 (d) 1.472
13. 13.0.23 × 17 — where does the decimal point go? (a) 0.391 (b) 0.0391 (c) 3.91 (d) 39.1
14. 14.4.5 × 0.3 — where does the decimal point go? (a) 0.135 (b) 13.5 (c) 1.35 (d) 0.0135
15. 15.2.5 × 4.1 — where does the decimal point go? (a) 0.1025 (b) 10.25 (c) 102.5 (d) 1.025
16. 16.0.13 × 17 — where does the decimal point go? (a) 0.221 (b) 22.1 (c) 2.21 (d) 0.0221
17. 17.0.99 × 6 — where does the decimal point go? (a) 5.94 (b) 0.0594 (c) 59.4 (d) 0.594
18. 18.3.3 × 0.5 — where does the decimal point go? (a) 0.165 (b) 1.65 (c) 0.0165 (d) 16.5
19. 19.0.73 × 16 — where does the decimal point go? (a) 1.168 (b) 11.68 (c) 0.1168 (d) 116.8
20. 20.1.2 × 3.7 — where does the decimal point go? (a) 44.4 (b) 4.44 (c) 0.0444 (d) 0.444
21. 21.3.3 × 3 — where does the decimal point go? (a) 0.99 (b) 0.099 (c) 9.9 (d) 99
22. 22.0.21 × 6 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
23. 23.2.2 × 4 — where does the decimal point go? (a) 88 (b) 8.8 (c) 0.88 (d) 0.088
24. 24.0.31 × 0.2 — where does the decimal point go? (a) 0.0062 (b) 0.062 (c) 0.00062 (d) 0.62
25. 25.0.78 × 14 — where does the decimal point go? (a) 109.2 (b) 10.92 (c) 0.1092 (d) 1.092
26. 26.4.9 × 4 — where does the decimal point go? (a) 0.196 (b) 19.6 (c) 196 (d) 1.96
27. 27.1.6 × 2.2 — where does the decimal point go? (a) 3.52 (b) 35.2 (c) 0.0352 (d) 0.352
28. 28.0.17 × 12 — where does the decimal point go? (a) 2.04 (b) 0.204 (c) 0.0204 (d) 20.4
29. 29.4.5 × 21 — where does the decimal point go? (a) 9.45 (b) 0.945 (c) 94.5 (d) 945
30. 30.0.86 × 36 — where does the decimal point go? (a) 0.3096 (b) 3.096 (c) 309.6 (d) 30.96
31. 31.0.32 × 3.9 — where does the decimal point go? (a) 1.248 (b) 12.48 (c) 0.01248 (d) 0.1248
32. 32.0.16 × 2.1 — where does the decimal point go? (a) 0.00336 (b) 0.336 (c) 0.0336 (d) 3.36
33. 33.9.9 × 0.4 — where does the decimal point go? (a) 3.96 (b) 0.0396 (c) 39.6 (d) 0.396
34. 34.9.3 × 0.6 — where does the decimal point go? (a) 0.0558 (b) 0.558 (c) 5.58 (d) 55.8
35. 35.6.2 × 8 — where does the decimal point go? (a) 496 (b) 49.6 (c) 0.496 (d) 4.96
36. 36.0.33 × 1.1 — where does the decimal point go? (a) 0.0363 (b) 0.363 (c) 0.00363 (d) 3.63
37. 37.9.3 × 2 — where does the decimal point go? (a) 1.86 (b) 186 (c) 0.186 (d) 18.6
38. 38.2.2 × 0.8 — where does the decimal point go? (a) 17.6 (b) 0.176 (c) 1.76 (d) 0.0176
39. 39.5.2 × 4.9 — where does the decimal point go? (a) 2.548 (b) 254.8 (c) 0.2548 (d) 25.48
40. 40.0.35 × 2.5 — where does the decimal point go? (a) 8.75 (b) 0.00875 (c) 0.875 (d) 0.0875

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