Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 500 · 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. 1.7.6 × 3.3 — where does the decimal point go? (a) 250.8 (b) 0.2508 (c) 2.508 (d) 25.08
2. 2.2.5 × 5 — where does the decimal point go? (a) 0.125 (b) 125 (c) 1.25 (d) 12.5
3. 3.6.8 × 32 — where does the decimal point go? (a) 217.6 (b) 2.176 (c) 2176 (d) 21.76
4. 4.1.7 × 0.5 — where does the decimal point go? (a) 0.0085 (b) 0.085 (c) 8.5 (d) 0.85
5. 5.0.61 × 0.3 — where does the decimal point go? (a) 0.00183 (b) 0.0183 (c) 1.83 (d) 0.183
6. 6.7.5 × 25 — where does the decimal point go? (a) 187.5 (b) 18.75 (c) 1875 (d) 1.875
7. 7.1.7 × 2.1 — where does the decimal point go? (a) 35.7 (b) 0.357 (c) 3.57 (d) 0.0357
8. 8.1.9 × 22 — where does the decimal point go? (a) 4.18 (b) 0.418 (c) 41.8 (d) 418
9. 9.8.9 × 2.7 — where does the decimal point go? (a) 240.3 (b) 0.2403 (c) 24.03 (d) 2.403
10. 10.0.59 × 18 — where does the decimal point go? (a) 1.062 (b) 10.62 (c) 0.1062 (d) 106.2
11. 11.3.8 × 29 — where does the decimal point go? (a) 11.02 (b) 110.2 (c) 1102 (d) 1.102
12. 12.4.6 × 2.4 — where does the decimal point go? (a) 1.104 (b) 110.4 (c) 0.1104 (d) 11.04
13. 13.0.82 × 3 — where does the decimal point go? (a) 0.0246 (b) 0.246 (c) 24.6 (d) 2.46
14. 14.3.8 × 7 — where does the decimal point go? (a) 26.6 (b) 2.66 (c) 266 (d) 0.266
15. 15.0.43 × 7 — where does the decimal point go? (a) 3.01 (b) 30.1 (c) 0.301 (d) 0.0301
16. 16.1.5 × 0.5 — where does the decimal point go? (a) 0.075 (b) 0.0075 (c) 0.75 (d) 7.5
17. 17.0.99 × 0.7 — where does the decimal point go? (a) 0.0693 (b) 6.93 (c) 0.693 (d) 0.00693
18. 18.0.52 × 2 — where does the decimal point go? (a) 0.104 (b) 1.04 (c) 0.0104 (d) 10.4
19. 19.9.3 × 3 — where does the decimal point go? (a) 0.279 (b) 27.9 (c) 2.79 (d) 279
20. 20.0.79 × 4 — where does the decimal point go? (a) 0.0316 (b) 0.316 (c) 3.16 (d) 31.6
21. 21.6.8 × 12 — where does the decimal point go? (a) 81.6 (b) 0.816 (c) 8.16 (d) 816
22. 22.7.4 × 8 — where does the decimal point go? (a) 592 (b) 5.92 (c) 59.2 (d) 0.592
23. 23.1.4 × 0.7 — where does the decimal point go? (a) 9.8 (b) 0.98 (c) 0.098 (d) 0.0098
24. 24.0.13 × 48 — where does the decimal point go? (a) 62.4 (b) 0.0624 (c) 0.624 (d) 6.24
25. 25.0.92 × 28 — where does the decimal point go? (a) 257.6 (b) 25.76 (c) 2.576 (d) 0.2576
26. 26.0.95 × 7 — where does the decimal point go? (a) 0.0665 (b) 0.665 (c) 66.5 (d) 6.65
27. 27.0.14 × 42 — where does the decimal point go? (a) 5.88 (b) 0.588 (c) 0.0588 (d) 58.8
28. 28.0.98 × 3.8 — where does the decimal point go? (a) 37.24 (b) 0.3724 (c) 0.03724 (d) 3.724
29. 29.9.5 × 29 — where does the decimal point go? (a) 275.5 (b) 27.55 (c) 2755 (d) 2.755
30. 30.8.1 × 8 — where does the decimal point go? (a) 0.648 (b) 64.8 (c) 648 (d) 6.48
31. 31.0.53 × 0.8 — where does the decimal point go? (a) 4.24 (b) 0.424 (c) 0.00424 (d) 0.0424
32. 32.0.32 × 44 — where does the decimal point go? (a) 14.08 (b) 1.408 (c) 0.1408 (d) 140.8
33. 33.8.2 × 0.2 — where does the decimal point go? (a) 1.64 (b) 0.164 (c) 16.4 (d) 0.0164
34. 34.6.9 × 0.5 — where does the decimal point go? (a) 0.345 (b) 3.45 (c) 34.5 (d) 0.0345
35. 35.2.3 × 7 — where does the decimal point go? (a) 0.161 (b) 161 (c) 1.61 (d) 16.1
36. 36.0.47 × 2.9 — where does the decimal point go? (a) 0.01363 (b) 1.363 (c) 0.1363 (d) 13.63
37. 37.7.7 × 0.8 — where does the decimal point go? (a) 61.6 (b) 0.616 (c) 6.16 (d) 0.0616
38. 38.0.13 × 0.7 — where does the decimal point go? (a) 0.00091 (b) 0.091 (c) 0.91 (d) 0.0091
39. 39.3.1 × 4.2 — where does the decimal point go? (a) 130.2 (b) 13.02 (c) 1.302 (d) 0.1302
40. 40.0.83 × 1.3 — where does the decimal point go? (a) 10.79 (b) 1.079 (c) 0.1079 (d) 0.01079

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