Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 833 · 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 202 × 3? (a) 1200 (b) 6000 (c) 600 (d) 60
2. 2.Check with nines: 15 × 95 = 1426. Correct or wrong? (a) wrong (b) correct
3. 3.353 − 49 =
4. 4.Best estimate of 58 × 28? (a) 18000 (b) 3600 (c) 1800 (d) 180
5. 5.310 − 57 =
6. 6.15 × 15 =
7. 7.Best estimate of 62 × 41? (a) 2400 (b) 4800 (c) 24000 (d) 240
8. 8.178 + 89 =
9. 9.₹57.35 + ₹46.85 =
10. 10.Best estimate of 303 × 7? (a) 210 (b) 2100 (c) 4200 (d) 21000
11. 11.36 × 8 =
12. 12.319 + 58 =
13. 13.47 + 89 + 50 + 84 =
14. 14.21 × 5 =
15. 15.423 − 18 =
16. 16.1200 ÷ 25 =
17. 17.110 × 4 =
18. 18.168 − 46 =
19. 19.Best estimate of 89 × 59? (a) 540 (b) 5400 (c) 10800 (d) 54000
20. 20.159 × 4 =
21. 21.40 × 4 =
22. 22.24 × 4 =
23. 23.31² =
24. 24.77 + 88 + 19 + 37 =
25. 25.Best estimate of 101 × 4? (a) 800 (b) 400 (c) 4000 (d) 40
26. 26.81² =
27. 27.21² =
28. 28.685 ÷ 5 =
29. 29.Check with nines: 53 × 30 = 1587. Correct or wrong? (a) correct (b) wrong
30. 30.2 + 3 + 6 + 5 + 7 =
31. 31.18 × 13 =
32. 32.498 − 79 =
33. 33.Check with nines: 750 + 790 = 1538. Correct or wrong? (a) wrong (b) correct
34. 34.₹69.80 − ₹25.80 =
35. 35.₹43.85 − ₹15.10 =
36. 36.23 × 8 =
37. 37.72 + 54 + 71 + 26 =
38. 38.20 × 15 =
39. 39.800 ÷ 25 =
40. 40.150 + 77 =

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