Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 925 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.13 × 14 =
2. 2.13 × 19 =
3. 3.9 + 4 + 6 + 8 =
4. 4.7 × 15 =
5. 5.1 + 8 + 1 + 9 =
6. 6.43 × 4 =
7. 7.10% of 670 =
8. 8.21² =
9. 9.12 × 15 =
10. 10.Check with nines: 15 × 73 = 1092. Correct or wrong? (a) wrong (b) correct
11. 11.21 + 14 + 11 + 31 =
12. 12.₹64.75 − ₹44.90 =
13. 13.348 + 19 =
14. 14.36 × 15 =
15. 15.5% of 450 =
16. 16.89 × 5 =
17. 17.11 × 16 =
18. 18.Best estimate of 88 × 62? (a) 54000 (b) 5400 (c) 10800 (d) 540
19. 19.61² =
20. 20.479 + 79 =
21. 21.10% of 560 =
22. 22.49 × 15 =
23. 23.418 − 27 =
24. 24.12 × 18 =
25. 25.925 ÷ 5 =
26. 26.59 + 56 + 54 + 73 =
27. 27.14 × 17 =
28. 28.54 + 70 + 32 + 38 =
29. 29.19² =
30. 30.₹20.85 + ₹49.05 =
31. 31.₹37.45 − ₹23.55 =
32. 32.41² =
33. 33.Best estimate of 72 × 71? (a) 490 (b) 49000 (c) 4900 (d) 9800
34. 34.125 − 26 =
35. 35.Check with nines: 94 × 37 = 3478. Correct or wrong? (a) wrong (b) correct
36. 36.162 − 27 =
37. 37.17 × 15 =
38. 38.Check with nines: 37 × 44 = 1628. Correct or wrong? (a) correct (b) wrong
39. 39.21² =
40. 40.52 + 51 + 22 + 42 =

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