Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 306 · 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. 1.9.4 × 17 — where does the decimal point go? (a) 1.598 (b) 159.8 (c) 15.98 (d) 1598
2. 2.5.4 × 4.8 — where does the decimal point go? (a) 0.2592 (b) 259.2 (c) 25.92 (d) 2.592
3. 3.3.1 × 1.1 — where does the decimal point go? (a) 0.341 (b) 3.41 (c) 0.0341 (d) 34.1
4. 4.7.7 × 3.2 — where does the decimal point go? (a) 24.64 (b) 246.4 (c) 0.2464 (d) 2.464
5. 5.0.67 × 3.1 — where does the decimal point go? (a) 2.077 (b) 0.2077 (c) 0.02077 (d) 20.77
6. 6.0.81 × 11 — where does the decimal point go? (a) 0.891 (b) 0.0891 (c) 8.91 (d) 89.1
7. 7.1.4 × 2 — where does the decimal point go? (a) 0.028 (b) 28 (c) 0.28 (d) 2.8
8. 8.9.2 × 0.7 — where does the decimal point go? (a) 0.0644 (b) 64.4 (c) 0.644 (d) 6.44
9. 9.0.26 × 22 — where does the decimal point go? (a) 57.2 (b) 5.72 (c) 0.0572 (d) 0.572
10. 10.7.4 × 0.8 — where does the decimal point go? (a) 59.2 (b) 5.92 (c) 0.592 (d) 0.0592
11. 11.8.4 × 37 — where does the decimal point go? (a) 31.08 (b) 3.108 (c) 310.8 (d) 3108
12. 12.4.1 × 2.1 — where does the decimal point go? (a) 0.861 (b) 86.1 (c) 8.61 (d) 0.0861
13. 13.0.19 × 4 — where does the decimal point go? (a) 0.076 (b) 0.0076 (c) 7.6 (d) 0.76
14. 14.0.14 × 0.4 — where does the decimal point go? (a) 0.00056 (b) 0.56 (c) 0.056 (d) 0.0056
15. 15.7.4 × 11 — where does the decimal point go? (a) 8.14 (b) 81.4 (c) 814 (d) 0.814
16. 16.8.9 × 3 — where does the decimal point go? (a) 26.7 (b) 2.67 (c) 0.267 (d) 267
17. 17.0.57 × 0.7 — where does the decimal point go? (a) 3.99 (b) 0.399 (c) 0.0399 (d) 0.00399
18. 18.0.77 × 42 — where does the decimal point go? (a) 323.4 (b) 0.3234 (c) 3.234 (d) 32.34
19. 19.3.7 × 28 — where does the decimal point go? (a) 103.6 (b) 10.36 (c) 1.036 (d) 1036
20. 20.4.3 × 0.2 — where does the decimal point go? (a) 0.0086 (b) 8.6 (c) 0.086 (d) 0.86
21. 21.0.91 × 1.9 — where does the decimal point go? (a) 0.01729 (b) 0.1729 (c) 17.29 (d) 1.729
22. 22.9.3 × 7 — where does the decimal point go? (a) 65.1 (b) 651 (c) 6.51 (d) 0.651
23. 23.0.27 × 8 — where does the decimal point go? (a) 0.0216 (b) 0.216 (c) 2.16 (d) 21.6
24. 24.5.9 × 0.6 — where does the decimal point go? (a) 35.4 (b) 0.0354 (c) 0.354 (d) 3.54
25. 25.0.49 × 1.1 — where does the decimal point go? (a) 5.39 (b) 0.0539 (c) 0.539 (d) 0.00539
26. 26.3.6 × 18 — where does the decimal point go? (a) 0.648 (b) 64.8 (c) 6.48 (d) 648
27. 27.0.93 × 5 — where does the decimal point go? (a) 0.465 (b) 0.0465 (c) 4.65 (d) 46.5
28. 28.0.76 × 2 — where does the decimal point go? (a) 0.152 (b) 15.2 (c) 1.52 (d) 0.0152
29. 29.2.9 × 2 — where does the decimal point go? (a) 0.058 (b) 0.58 (c) 58 (d) 5.8
30. 30.0.92 × 8 — where does the decimal point go? (a) 0.0736 (b) 73.6 (c) 0.736 (d) 7.36
31. 31.0.47 × 0.7 — where does the decimal point go? (a) 0.00329 (b) 0.0329 (c) 0.329 (d) 3.29
32. 32.1.9 × 41 — where does the decimal point go? (a) 7.79 (b) 779 (c) 0.779 (d) 77.9
33. 33.0.71 × 0.3 — where does the decimal point go? (a) 2.13 (b) 0.213 (c) 0.0213 (d) 0.00213
34. 34.0.85 × 3.9 — where does the decimal point go? (a) 3.315 (b) 0.3315 (c) 33.15 (d) 0.03315
35. 35.0.58 × 0.2 — where does the decimal point go? (a) 0.116 (b) 0.0116 (c) 1.16 (d) 0.00116
36. 36.7.7 × 46 — where does the decimal point go? (a) 354.2 (b) 3.542 (c) 35.42 (d) 3542
37. 37.0.36 × 39 — where does the decimal point go? (a) 14.04 (b) 1.404 (c) 140.4 (d) 0.1404
38. 38.0.62 × 18 — where does the decimal point go? (a) 0.1116 (b) 1.116 (c) 111.6 (d) 11.16
39. 39.0.96 × 2.8 — where does the decimal point go? (a) 26.88 (b) 2.688 (c) 0.02688 (d) 0.2688
40. 40.4.9 × 2.6 — where does the decimal point go? (a) 0.1274 (b) 12.74 (c) 127.4 (d) 1.274

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