Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 997 · 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. 1.2.8 × 17 — where does the decimal point go? (a) 47.6 (b) 0.476 (c) 476 (d) 4.76
2. 2.8.1 × 0.3 — where does the decimal point go? (a) 0.0243 (b) 2.43 (c) 0.243 (d) 24.3
3. 3.6.3 × 1.2 — where does the decimal point go? (a) 0.756 (b) 75.6 (c) 0.0756 (d) 7.56
4. 4.8.3 × 1.3 — where does the decimal point go? (a) 1.079 (b) 0.1079 (c) 10.79 (d) 107.9
5. 5.5.8 × 0.6 — where does the decimal point go? (a) 0.348 (b) 3.48 (c) 0.0348 (d) 34.8
6. 6.0.77 × 5 — where does the decimal point go? (a) 38.5 (b) 0.0385 (c) 0.385 (d) 3.85
7. 7.0.42 × 3.6 — where does the decimal point go? (a) 0.1512 (b) 1.512 (c) 0.01512 (d) 15.12
8. 8.4.2 × 27 — where does the decimal point go? (a) 11.34 (b) 113.4 (c) 1134 (d) 1.134
9. 9.0.83 × 12 — where does the decimal point go? (a) 99.6 (b) 0.0996 (c) 0.996 (d) 9.96
10. 10.3.6 × 4.8 — where does the decimal point go? (a) 1.728 (b) 17.28 (c) 172.8 (d) 0.1728
11. 11.7.3 × 0.9 — where does the decimal point go? (a) 6.57 (b) 0.0657 (c) 0.657 (d) 65.7
12. 12.0.73 × 0.7 — where does the decimal point go? (a) 0.00511 (b) 0.511 (c) 5.11 (d) 0.0511
13. 13.5.4 × 0.2 — where does the decimal point go? (a) 0.0108 (b) 10.8 (c) 0.108 (d) 1.08
14. 14.0.55 × 0.3 — where does the decimal point go? (a) 0.0165 (b) 1.65 (c) 0.00165 (d) 0.165
15. 15.0.87 × 3.5 — where does the decimal point go? (a) 0.03045 (b) 30.45 (c) 0.3045 (d) 3.045
16. 16.0.93 × 2.5 — where does the decimal point go? (a) 0.2325 (b) 23.25 (c) 0.02325 (d) 2.325
17. 17.2.9 × 8 — where does the decimal point go? (a) 232 (b) 23.2 (c) 2.32 (d) 0.232
18. 18.6.6 × 3.8 — where does the decimal point go? (a) 0.2508 (b) 25.08 (c) 2.508 (d) 250.8
19. 19.0.43 × 1.6 — where does the decimal point go? (a) 0.0688 (b) 0.00688 (c) 0.688 (d) 6.88
20. 20.2.7 × 0.8 — where does the decimal point go? (a) 0.216 (b) 2.16 (c) 21.6 (d) 0.0216
21. 21.2.9 × 0.3 — where does the decimal point go? (a) 0.087 (b) 0.0087 (c) 0.87 (d) 8.7
22. 22.0.73 × 38 — where does the decimal point go? (a) 2.774 (b) 0.2774 (c) 277.4 (d) 27.74
23. 23.0.23 × 24 — where does the decimal point go? (a) 5.52 (b) 0.552 (c) 0.0552 (d) 55.2
24. 24.0.73 × 9 — where does the decimal point go? (a) 65.7 (b) 0.0657 (c) 6.57 (d) 0.657
25. 25.4.9 × 0.9 — where does the decimal point go? (a) 4.41 (b) 0.441 (c) 0.0441 (d) 44.1
26. 26.0.39 × 0.4 — where does the decimal point go? (a) 0.156 (b) 0.0156 (c) 1.56 (d) 0.00156
27. 27.3.9 × 6 — where does the decimal point go? (a) 23.4 (b) 0.234 (c) 2.34 (d) 234
28. 28.1.9 × 12 — where does the decimal point go? (a) 2.28 (b) 22.8 (c) 0.228 (d) 228
29. 29.0.97 × 22 — where does the decimal point go? (a) 0.2134 (b) 21.34 (c) 213.4 (d) 2.134
30. 30.0.92 × 0.8 — where does the decimal point go? (a) 7.36 (b) 0.00736 (c) 0.736 (d) 0.0736
31. 31.5.9 × 18 — where does the decimal point go? (a) 10.62 (b) 106.2 (c) 1062 (d) 1.062
32. 32.9.4 × 0.9 — where does the decimal point go? (a) 8.46 (b) 0.0846 (c) 84.6 (d) 0.846
33. 33.4.2 × 3.2 — where does the decimal point go? (a) 0.1344 (b) 13.44 (c) 134.4 (d) 1.344
34. 34.0.34 × 24 — where does the decimal point go? (a) 0.816 (b) 81.6 (c) 8.16 (d) 0.0816
35. 35.8.6 × 3.1 — where does the decimal point go? (a) 2.666 (b) 0.2666 (c) 266.6 (d) 26.66
36. 36.0.63 × 7 — where does the decimal point go? (a) 0.0441 (b) 44.1 (c) 4.41 (d) 0.441
37. 37.0.19 × 1.7 — where does the decimal point go? (a) 0.00323 (b) 0.0323 (c) 0.323 (d) 3.23
38. 38.0.37 × 12 — where does the decimal point go? (a) 4.44 (b) 44.4 (c) 0.0444 (d) 0.444
39. 39.2.7 × 29 — where does the decimal point go? (a) 0.783 (b) 7.83 (c) 783 (d) 78.3
40. 40.0.94 × 2.7 — where does the decimal point go? (a) 25.38 (b) 0.2538 (c) 0.02538 (d) 2.538

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