Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 471 · 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. 1.0.42 × 7 — where does the decimal point go? (a) 0.294 (b) 2.94 (c) 29.4 (d) 0.0294
2. 2.0.84 × 6 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 50.4 (d) 0.0504
3. 3.4.7 × 4.6 — where does the decimal point go? (a) 2.162 (b) 0.2162 (c) 216.2 (d) 21.62
4. 4.0.83 × 32 — where does the decimal point go? (a) 0.2656 (b) 26.56 (c) 265.6 (d) 2.656
5. 5.0.73 × 0.4 — where does the decimal point go? (a) 0.00292 (b) 0.292 (c) 0.0292 (d) 2.92
6. 6.7.5 × 31 — where does the decimal point go? (a) 2.325 (b) 232.5 (c) 2325 (d) 23.25
7. 7.0.33 × 44 — where does the decimal point go? (a) 14.52 (b) 0.1452 (c) 145.2 (d) 1.452
8. 8.9.1 × 2.9 — where does the decimal point go? (a) 2.639 (b) 26.39 (c) 0.2639 (d) 263.9
9. 9.4.8 × 6 — where does the decimal point go? (a) 288 (b) 28.8 (c) 2.88 (d) 0.288
10. 10.1.9 × 6 — where does the decimal point go? (a) 11.4 (b) 114 (c) 0.114 (d) 1.14
11. 11.4.2 × 43 — where does the decimal point go? (a) 1806 (b) 1.806 (c) 18.06 (d) 180.6
12. 12.0.59 × 4 — where does the decimal point go? (a) 0.0236 (b) 0.236 (c) 23.6 (d) 2.36
13. 13.6.5 × 7 — where does the decimal point go? (a) 0.455 (b) 455 (c) 4.55 (d) 45.5
14. 14.0.41 × 3 — where does the decimal point go? (a) 12.3 (b) 0.123 (c) 0.0123 (d) 1.23
15. 15.3.9 × 8 — where does the decimal point go? (a) 3.12 (b) 31.2 (c) 0.312 (d) 312
16. 16.0.33 × 42 — where does the decimal point go? (a) 1.386 (b) 138.6 (c) 13.86 (d) 0.1386
17. 17.3.5 × 49 — where does the decimal point go? (a) 171.5 (b) 17.15 (c) 1.715 (d) 1715
18. 18.9.1 × 7 — where does the decimal point go? (a) 637 (b) 6.37 (c) 63.7 (d) 0.637
19. 19.1.9 × 0.8 — where does the decimal point go? (a) 15.2 (b) 0.0152 (c) 1.52 (d) 0.152
20. 20.9.8 × 0.4 — where does the decimal point go? (a) 39.2 (b) 0.392 (c) 0.0392 (d) 3.92
21. 21.5.7 × 4 — where does the decimal point go? (a) 22.8 (b) 0.228 (c) 228 (d) 2.28
22. 22.1.7 × 0.2 — where does the decimal point go? (a) 0.0034 (b) 0.034 (c) 0.34 (d) 3.4
23. 23.8.7 × 5 — where does the decimal point go? (a) 0.435 (b) 43.5 (c) 435 (d) 4.35
24. 24.0.59 × 0.4 — where does the decimal point go? (a) 2.36 (b) 0.0236 (c) 0.00236 (d) 0.236
25. 25.0.71 × 0.7 — where does the decimal point go? (a) 0.0497 (b) 4.97 (c) 0.497 (d) 0.00497
26. 26.0.62 × 42 — where does the decimal point go? (a) 2.604 (b) 0.2604 (c) 26.04 (d) 260.4
27. 27.0.26 × 3.2 — where does the decimal point go? (a) 0.832 (b) 8.32 (c) 0.00832 (d) 0.0832
28. 28.3.4 × 3.6 — where does the decimal point go? (a) 1.224 (b) 0.1224 (c) 122.4 (d) 12.24
29. 29.0.28 × 0.8 — where does the decimal point go? (a) 0.224 (b) 2.24 (c) 0.00224 (d) 0.0224
30. 30.0.82 × 0.8 — where does the decimal point go? (a) 0.0656 (b) 0.656 (c) 0.00656 (d) 6.56
31. 31.0.87 × 2.2 — where does the decimal point go? (a) 0.01914 (b) 1.914 (c) 0.1914 (d) 19.14
32. 32.0.21 × 9 — where does the decimal point go? (a) 0.0189 (b) 0.189 (c) 1.89 (d) 18.9
33. 33.0.16 × 7 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 0.0112 (d) 11.2
34. 34.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 1.26 (d) 12.6
35. 35.3.3 × 4.8 — where does the decimal point go? (a) 1.584 (b) 0.1584 (c) 15.84 (d) 158.4
36. 36.1.9 × 2.8 — where does the decimal point go? (a) 0.532 (b) 5.32 (c) 53.2 (d) 0.0532
37. 37.5.8 × 6 — where does the decimal point go? (a) 34.8 (b) 3.48 (c) 348 (d) 0.348
38. 38.8.3 × 0.8 — where does the decimal point go? (a) 66.4 (b) 0.664 (c) 6.64 (d) 0.0664
39. 39.7.5 × 17 — where does the decimal point go? (a) 12.75 (b) 1.275 (c) 127.5 (d) 1275
40. 40.6.7 × 41 — where does the decimal point go? (a) 2.747 (b) 27.47 (c) 274.7 (d) 2747

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