Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 891 · 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. 1.6.7 × 3.8 — where does the decimal point go? (a) 2.546 (b) 0.2546 (c) 25.46 (d) 254.6
2. 2.0.74 × 1.6 — where does the decimal point go? (a) 0.01184 (b) 0.1184 (c) 11.84 (d) 1.184
3. 3.0.76 × 9 — where does the decimal point go? (a) 0.684 (b) 68.4 (c) 0.0684 (d) 6.84
4. 4.6.6 × 28 — where does the decimal point go? (a) 18.48 (b) 184.8 (c) 1848 (d) 1.848
5. 5.0.98 × 0.7 — where does the decimal point go? (a) 0.0686 (b) 0.00686 (c) 6.86 (d) 0.686
6. 6.0.12 × 3 — where does the decimal point go? (a) 0.0036 (b) 3.6 (c) 0.036 (d) 0.36
7. 7.0.82 × 0.2 — where does the decimal point go? (a) 0.164 (b) 0.0164 (c) 1.64 (d) 0.00164
8. 8.0.82 × 7 — where does the decimal point go? (a) 5.74 (b) 0.574 (c) 0.0574 (d) 57.4
9. 9.0.41 × 0.5 — where does the decimal point go? (a) 0.00205 (b) 2.05 (c) 0.0205 (d) 0.205
10. 10.0.51 × 2.5 — where does the decimal point go? (a) 0.1275 (b) 0.01275 (c) 12.75 (d) 1.275
11. 11.9.9 × 6 — where does the decimal point go? (a) 59.4 (b) 594 (c) 5.94 (d) 0.594
12. 12.0.76 × 1.2 — where does the decimal point go? (a) 0.912 (b) 0.0912 (c) 0.00912 (d) 9.12
13. 13.0.21 × 8 — where does the decimal point go? (a) 0.0168 (b) 16.8 (c) 0.168 (d) 1.68
14. 14.0.91 × 0.2 — where does the decimal point go? (a) 1.82 (b) 0.0182 (c) 0.00182 (d) 0.182
15. 15.8.7 × 36 — where does the decimal point go? (a) 31.32 (b) 313.2 (c) 3.132 (d) 3132
16. 16.6.8 × 19 — where does the decimal point go? (a) 12.92 (b) 1292 (c) 1.292 (d) 129.2
17. 17.0.77 × 2.5 — where does the decimal point go? (a) 0.01925 (b) 1.925 (c) 19.25 (d) 0.1925
18. 18.4.3 × 33 — where does the decimal point go? (a) 1419 (b) 14.19 (c) 1.419 (d) 141.9
19. 19.0.96 × 4 — where does the decimal point go? (a) 0.0384 (b) 3.84 (c) 0.384 (d) 38.4
20. 20.1.6 × 2.6 — where does the decimal point go? (a) 41.6 (b) 0.0416 (c) 0.416 (d) 4.16
21. 21.2.4 × 18 — where does the decimal point go? (a) 4.32 (b) 432 (c) 43.2 (d) 0.432
22. 22.2.9 × 0.2 — where does the decimal point go? (a) 0.0058 (b) 0.058 (c) 5.8 (d) 0.58
23. 23.0.31 × 0.9 — where does the decimal point go? (a) 0.00279 (b) 0.279 (c) 0.0279 (d) 2.79
24. 24.0.54 × 12 — where does the decimal point go? (a) 0.648 (b) 6.48 (c) 0.0648 (d) 64.8
25. 25.1.3 × 24 — where does the decimal point go? (a) 31.2 (b) 312 (c) 0.312 (d) 3.12
26. 26.0.43 × 1.1 — where does the decimal point go? (a) 4.73 (b) 0.473 (c) 0.0473 (d) 0.00473
27. 27.8.4 × 11 — where does the decimal point go? (a) 92.4 (b) 9.24 (c) 0.924 (d) 924
28. 28.3.6 × 3.8 — where does the decimal point go? (a) 13.68 (b) 0.1368 (c) 1.368 (d) 136.8
29. 29.1.3 × 0.5 — where does the decimal point go? (a) 0.65 (b) 0.065 (c) 0.0065 (d) 6.5
30. 30.0.52 × 0.3 — where does the decimal point go? (a) 0.00156 (b) 1.56 (c) 0.0156 (d) 0.156
31. 31.1.9 × 4.7 — where does the decimal point go? (a) 0.0893 (b) 89.3 (c) 0.893 (d) 8.93
32. 32.6.5 × 0.5 — where does the decimal point go? (a) 3.25 (b) 0.0325 (c) 0.325 (d) 32.5
33. 33.0.47 × 0.2 — where does the decimal point go? (a) 0.0094 (b) 0.94 (c) 0.00094 (d) 0.094
34. 34.0.84 × 2.8 — where does the decimal point go? (a) 0.2352 (b) 0.02352 (c) 2.352 (d) 23.52
35. 35.5.5 × 4.3 — where does the decimal point go? (a) 23.65 (b) 236.5 (c) 2.365 (d) 0.2365
36. 36.9.4 × 27 — where does the decimal point go? (a) 25.38 (b) 2.538 (c) 2538 (d) 253.8
37. 37.0.26 × 0.4 — where does the decimal point go? (a) 0.104 (b) 0.0104 (c) 1.04 (d) 0.00104
38. 38.0.95 × 3 — where does the decimal point go? (a) 28.5 (b) 0.285 (c) 2.85 (d) 0.0285
39. 39.7.3 × 9 — where does the decimal point go? (a) 0.657 (b) 65.7 (c) 6.57 (d) 657
40. 40.2.9 × 8 — where does the decimal point go? (a) 23.2 (b) 232 (c) 2.32 (d) 0.232

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