Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 983 · 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. 1.1.7 × 15 — where does the decimal point go? (a) 25.5 (b) 255 (c) 0.255 (d) 2.55
2. 2.1.9 × 3 — where does the decimal point go? (a) 0.057 (b) 57 (c) 0.57 (d) 5.7
3. 3.3.7 × 44 — where does the decimal point go? (a) 16.28 (b) 162.8 (c) 1628 (d) 1.628
4. 4.0.98 × 0.4 — where does the decimal point go? (a) 0.0392 (b) 0.00392 (c) 3.92 (d) 0.392
5. 5.0.61 × 0.4 — where does the decimal point go? (a) 0.244 (b) 0.00244 (c) 0.0244 (d) 2.44
6. 6.0.67 × 33 — where does the decimal point go? (a) 2.211 (b) 221.1 (c) 0.2211 (d) 22.11
7. 7.0.73 × 16 — where does the decimal point go? (a) 11.68 (b) 0.1168 (c) 1.168 (d) 116.8
8. 8.0.27 × 7 — where does the decimal point go? (a) 0.189 (b) 0.0189 (c) 18.9 (d) 1.89
9. 9.7.8 × 4.4 — where does the decimal point go? (a) 34.32 (b) 0.3432 (c) 3.432 (d) 343.2
10. 10.0.14 × 17 — where does the decimal point go? (a) 23.8 (b) 0.238 (c) 2.38 (d) 0.0238
11. 11.9.7 × 0.4 — where does the decimal point go? (a) 0.0388 (b) 38.8 (c) 3.88 (d) 0.388
12. 12.0.86 × 0.4 — where does the decimal point go? (a) 3.44 (b) 0.00344 (c) 0.344 (d) 0.0344
13. 13.0.76 × 0.2 — where does the decimal point go? (a) 0.00152 (b) 0.152 (c) 0.0152 (d) 1.52
14. 14.0.24 × 9 — where does the decimal point go? (a) 0.216 (b) 21.6 (c) 0.0216 (d) 2.16
15. 15.4.9 × 6 — where does the decimal point go? (a) 29.4 (b) 0.294 (c) 294 (d) 2.94
16. 16.0.76 × 8 — where does the decimal point go? (a) 0.608 (b) 6.08 (c) 60.8 (d) 0.0608
17. 17.0.47 × 2 — where does the decimal point go? (a) 0.0094 (b) 0.094 (c) 9.4 (d) 0.94
18. 18.6.7 × 0.5 — where does the decimal point go? (a) 0.335 (b) 0.0335 (c) 33.5 (d) 3.35
19. 19.0.55 × 29 — where does the decimal point go? (a) 15.95 (b) 1.595 (c) 0.1595 (d) 159.5
20. 20.0.79 × 3.9 — where does the decimal point go? (a) 0.03081 (b) 3.081 (c) 0.3081 (d) 30.81
21. 21.9.8 × 17 — where does the decimal point go? (a) 16.66 (b) 1666 (c) 166.6 (d) 1.666
22. 22.1.5 × 2.7 — where does the decimal point go? (a) 40.5 (b) 4.05 (c) 0.0405 (d) 0.405
23. 23.0.67 × 21 — where does the decimal point go? (a) 0.1407 (b) 140.7 (c) 14.07 (d) 1.407
24. 24.0.32 × 6 — where does the decimal point go? (a) 0.192 (b) 19.2 (c) 0.0192 (d) 1.92
25. 25.4.6 × 7 — where does the decimal point go? (a) 3.22 (b) 322 (c) 0.322 (d) 32.2
26. 26.0.58 × 0.7 — where does the decimal point go? (a) 0.406 (b) 4.06 (c) 0.0406 (d) 0.00406
27. 27.6.1 × 12 — where does the decimal point go? (a) 0.732 (b) 7.32 (c) 732 (d) 73.2
28. 28.2.7 × 3.7 — where does the decimal point go? (a) 0.0999 (b) 9.99 (c) 0.999 (d) 99.9
29. 29.3.7 × 1.6 — where does the decimal point go? (a) 59.2 (b) 0.0592 (c) 0.592 (d) 5.92
30. 30.2.6 × 21 — where does the decimal point go? (a) 0.546 (b) 5.46 (c) 54.6 (d) 546
31. 31.5.6 × 11 — where does the decimal point go? (a) 61.6 (b) 616 (c) 6.16 (d) 0.616
32. 32.5.9 × 3.8 — where does the decimal point go? (a) 0.2242 (b) 22.42 (c) 2.242 (d) 224.2
33. 33.0.49 × 0.7 — where does the decimal point go? (a) 3.43 (b) 0.0343 (c) 0.343 (d) 0.00343
34. 34.0.97 × 13 — where does the decimal point go? (a) 0.1261 (b) 1.261 (c) 126.1 (d) 12.61
35. 35.0.41 × 3.1 — where does the decimal point go? (a) 0.01271 (b) 0.1271 (c) 1.271 (d) 12.71
36. 36.0.14 × 9 — where does the decimal point go? (a) 0.126 (b) 1.26 (c) 0.0126 (d) 12.6
37. 37.1.9 × 2.1 — where does the decimal point go? (a) 0.399 (b) 39.9 (c) 0.0399 (d) 3.99
38. 38.0.58 × 3.1 — where does the decimal point go? (a) 1.798 (b) 0.1798 (c) 17.98 (d) 0.01798
39. 39.0.46 × 39 — where does the decimal point go? (a) 0.1794 (b) 1.794 (c) 179.4 (d) 17.94
40. 40.0.51 × 7 — where does the decimal point go? (a) 3.57 (b) 0.0357 (c) 35.7 (d) 0.357

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