Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 994 · 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. 1.7.8 × 3 — where does the decimal point go? (a) 23.4 (b) 2.34 (c) 0.234 (d) 234
2. 2.4.3 × 6 — where does the decimal point go? (a) 25.8 (b) 2.58 (c) 0.258 (d) 258
3. 3.9.6 × 4 — where does the decimal point go? (a) 0.384 (b) 3.84 (c) 384 (d) 38.4
4. 4.0.47 × 0.8 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 0.00376 (d) 0.0376
5. 5.0.59 × 0.7 — where does the decimal point go? (a) 0.00413 (b) 0.0413 (c) 0.413 (d) 4.13
6. 6.0.63 × 16 — where does the decimal point go? (a) 0.1008 (b) 100.8 (c) 10.08 (d) 1.008
7. 7.9.7 × 6 — where does the decimal point go? (a) 0.582 (b) 58.2 (c) 5.82 (d) 582
8. 8.0.29 × 4 — where does the decimal point go? (a) 0.0116 (b) 0.116 (c) 11.6 (d) 1.16
9. 9.0.26 × 8 — where does the decimal point go? (a) 2.08 (b) 0.208 (c) 0.0208 (d) 20.8
10. 10.3.3 × 1.2 — where does the decimal point go? (a) 3.96 (b) 0.0396 (c) 39.6 (d) 0.396
11. 11.3.9 × 46 — where does the decimal point go? (a) 1.794 (b) 179.4 (c) 1794 (d) 17.94
12. 12.0.36 × 0.4 — where does the decimal point go? (a) 1.44 (b) 0.0144 (c) 0.00144 (d) 0.144
13. 13.0.96 × 2 — where does the decimal point go? (a) 1.92 (b) 19.2 (c) 0.0192 (d) 0.192
14. 14.0.98 × 7 — where does the decimal point go? (a) 68.6 (b) 0.686 (c) 0.0686 (d) 6.86
15. 15.5.6 × 19 — where does the decimal point go? (a) 10.64 (b) 1.064 (c) 106.4 (d) 1064
16. 16.2.8 × 0.6 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 16.8 (d) 0.0168
17. 17.3.9 × 4 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 15.6 (d) 156
18. 18.8.6 × 1.6 — where does the decimal point go? (a) 0.1376 (b) 13.76 (c) 137.6 (d) 1.376
19. 19.0.66 × 0.9 — where does the decimal point go? (a) 0.0594 (b) 5.94 (c) 0.594 (d) 0.00594
20. 20.0.29 × 8 — where does the decimal point go? (a) 23.2 (b) 0.232 (c) 2.32 (d) 0.0232
21. 21.6.4 × 2.1 — where does the decimal point go? (a) 134.4 (b) 1.344 (c) 0.1344 (d) 13.44
22. 22.0.48 × 3 — where does the decimal point go? (a) 14.4 (b) 0.0144 (c) 1.44 (d) 0.144
23. 23.1.7 × 4.1 — where does the decimal point go? (a) 0.697 (b) 6.97 (c) 0.0697 (d) 69.7
24. 24.8.3 × 8 — where does the decimal point go? (a) 6.64 (b) 66.4 (c) 0.664 (d) 664
25. 25.4.9 × 46 — where does the decimal point go? (a) 225.4 (b) 2254 (c) 22.54 (d) 2.254
26. 26.1.9 × 3 — where does the decimal point go? (a) 5.7 (b) 57 (c) 0.57 (d) 0.057
27. 27.2.6 × 18 — where does the decimal point go? (a) 0.468 (b) 4.68 (c) 468 (d) 46.8
28. 28.6.8 × 22 — where does the decimal point go? (a) 14.96 (b) 149.6 (c) 1496 (d) 1.496
29. 29.2.1 × 0.6 — where does the decimal point go? (a) 0.126 (b) 12.6 (c) 0.0126 (d) 1.26
30. 30.0.35 × 0.7 — where does the decimal point go? (a) 0.0245 (b) 0.00245 (c) 2.45 (d) 0.245
31. 31.4.1 × 2 — where does the decimal point go? (a) 8.2 (b) 82 (c) 0.82 (d) 0.082
32. 32.4.3 × 2 — where does the decimal point go? (a) 0.86 (b) 8.6 (c) 86 (d) 0.086
33. 33.4.2 × 8 — where does the decimal point go? (a) 3.36 (b) 0.336 (c) 336 (d) 33.6
34. 34.1.2 × 0.6 — where does the decimal point go? (a) 0.072 (b) 7.2 (c) 0.72 (d) 0.0072
35. 35.6.8 × 0.4 — where does the decimal point go? (a) 0.0272 (b) 2.72 (c) 0.272 (d) 27.2
36. 36.0.49 × 47 — where does the decimal point go? (a) 0.2303 (b) 2.303 (c) 230.3 (d) 23.03
37. 37.0.49 × 7 — where does the decimal point go? (a) 0.343 (b) 34.3 (c) 3.43 (d) 0.0343
38. 38.2.7 × 0.5 — where does the decimal point go? (a) 0.0135 (b) 0.135 (c) 1.35 (d) 13.5
39. 39.0.28 × 0.4 — where does the decimal point go? (a) 1.12 (b) 0.00112 (c) 0.112 (d) 0.0112
40. 40.0.25 × 15 — where does the decimal point go? (a) 3.75 (b) 0.375 (c) 37.5 (d) 0.0375

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