Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 256 · 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. 1.76 + 45 + 89 + 58 =
2. 2.Check with nines: 84 × 91 = 7644. Correct or wrong? (a) wrong (b) correct
3. 3.26 + 74 + 53 + 73 =
4. 4.39 × 8 =
5. 5.920 ÷ 5 =
6. 6.69 × 50 =
7. 7.Check with nines: 94 × 90 = 8459. Correct or wrong? (a) correct (b) wrong
8. 8.₹83.20 + ₹46.05 =
9. 9.47 × 50 =
10. 10.14 × 8 =
11. 11.Check with nines: 56 × 12 = 672. Correct or wrong? (a) wrong (b) correct
12. 12.5% of 80 =
13. 13.42 × 15 =
14. 14.Best estimate of 199 × 7? (a) 14000 (b) 140 (c) 1400 (d) 2800
15. 15.₹81.20 − ₹29.45 =
16. 16.15 × 13 =
17. 17.Best estimate of 58 × 91? (a) 5400 (b) 540 (c) 54000 (d) 10800
18. 18.169 − 59 =
19. 19.111 × 4 =
20. 20.39² =
21. 21.Check with nines: 326 + 271 = 597. Correct or wrong? (a) wrong (b) correct
22. 22.61 + 36 + 14 + 83 =
23. 23.₹85.55 − ₹17.85 =
24. 24.Best estimate of 303 × 8? (a) 240 (b) 2400 (c) 24000 (d) 4800
25. 25.289 + 88 =
26. 26.66 + 71 + 51 + 82 =
27. 27.18 × 13 =
28. 28.25% of 40 =
29. 29.63 × 15 =
30. 30.15 + 82 + 13 + 69 =
31. 31.470 + 69 =
32. 32.Check with nines: 152 + 321 = 473. Correct or wrong? (a) correct (b) wrong
33. 33.36 × 4 =
34. 34.55 + 12 + 34 + 84 =
35. 35.3 + 9 + 5 + 7 =
36. 36.₹57.50 − ₹18.65 =
37. 37.498 − 36 =
38. 38.49² =
39. 39.8 + 7 + 4 + 5 + 6 =
40. 40.3 + 3 + 2 + 4 + 7 =

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