Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 542 · 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.Best estimate of 29 × 28? (a) 9000 (b) 90 (c) 900 (d) 1800
2. 2.21 × 50 =
3. 3.6 + 4 + 9 + 5 =
4. 4.24 × 50 =
5. 5.79² =
6. 6.51 × 8 =
7. 7.₹15.70 − ₹2.95 =
8. 8.83 × 4 =
9. 9.51 × 15 =
10. 10.13 × 17 =
11. 11.Best estimate of 42 × 72? (a) 280 (b) 2800 (c) 28000 (d) 5600
12. 12.Check with nines: 144 + 280 = 424. Correct or wrong? (a) correct (b) wrong
13. 13.89 × 5 =
14. 14.18 + 82 + 60 + 28 =
15. 15.50% of 360 =
16. 16.465 ÷ 5 =
17. 17.22 × 8 =
18. 18.Check with nines: 65 × 62 = 4030. Correct or wrong? (a) correct (b) wrong
19. 19.61² =
20. 20.58 × 4 =
21. 21.192 + 97 =
22. 22.Check with nines: 47 × 44 = 2068. Correct or wrong? (a) wrong (b) correct
23. 23.7 + 8 + 7 + 3 =
24. 24.396 + 77 =
25. 25.8 + 6 + 6 + 4 =
26. 26.160 + 77 =
27. 27.494 − 96 =
28. 28.58 × 15 =
29. 29.91 − 48 =
30. 30.₹92.90 + ₹4.70 =
31. 31.265 + 28 =
32. 32.31² =
33. 33.Best estimate of 32 × 62? (a) 3600 (b) 1800 (c) 18000 (d) 180
34. 34.69 × 4 =
35. 35.269 + 67 =
36. 36.60 + 34 + 69 + 54 =
37. 37.9 + 1 + 1 + 9 =
38. 38.79² =
39. 39.68 + 52 + 54 + 89 =
40. 40.Check with nines: 718 + 909 = 1627. Correct or wrong? (a) wrong (b) correct

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