Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 996 · 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 401 × 9? (a) 360 (b) 3600 (c) 7200 (d) 36000
2. 2.29² =
3. 3.367 + 88 =
4. 4.339 − 47 =
5. 5.₹15.35 + ₹2.95 =
6. 6.705 ÷ 5 =
7. 7.15% of 210 =
8. 8.39² =
9. 9.Best estimate of 598 × 3? (a) 180 (b) 1800 (c) 18000 (d) 3600
10. 10.413 − 49 =
11. 11.25 × 8 =
12. 12.15% of 780 =
13. 13.15 × 15 =
14. 14.31 × 5 =
15. 15.66 × 8 =
16. 16.16 × 19 =
17. 17.Best estimate of 61 × 38? (a) 4800 (b) 24000 (c) 240 (d) 2400
18. 18.51² =
19. 19.10 × 15 =
20. 20.₹16.90 − ₹11.80 =
21. 21.126 × 4 =
22. 22.59 × 50 =
23. 23.₹76.45 + ₹42.75 =
24. 24.410 − 69 =
25. 25.16 × 16 =
26. 26.₹20.45 + ₹42.50 =
27. 27.Check with nines: 74 × 30 = 2220. Correct or wrong? (a) correct (b) wrong
28. 28.495 − 38 =
29. 29.50% of 510 =
30. 30.63 × 15 =
31. 31.418 + 37 =
32. 32.84 × 4 =
33. 33.Best estimate of 81 × 28? (a) 2400 (b) 24000 (c) 240 (d) 4800
34. 34.16 × 16 =
35. 35.1 + 4 + 4 + 7 + 3 =
36. 36.Best estimate of 88 × 29? (a) 270 (b) 2700 (c) 5400 (d) 27000
37. 37.19² =
38. 38.76 + 71 + 18 + 52 =
39. 39.₹45.05 − ₹6.35 =
40. 40.14 × 18 =

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