Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 457 · 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. 1.12 × 16 =
2. 2.19² =
3. 3.₹41.45 + ₹26.45 =
4. 4.700 ÷ 50 =
5. 5.364 + 18 =
6. 6.20% of 120 =
7. 7.395 − 87 =
8. 8.Check with nines: 460 + 410 = 870. Correct or wrong? (a) wrong (b) correct
9. 9.Best estimate of 39 × 68? (a) 5600 (b) 2800 (c) 280 (d) 28000
10. 10.17 × 13 =
11. 11.30 × 5 =
12. 12.125 × 4 =
13. 13.13 × 11 =
14. 14.9 + 7 + 3 + 8 + 8 =
15. 15.87 × 5 =
16. 16.11 × 11 =
17. 17.825 ÷ 25 =
18. 18.17 × 11 =
19. 19.38 × 15 =
20. 20.19 × 17 =
21. 21.1 + 9 + 3 + 3 =
22. 22.90 × 5 =
23. 23.₹53.25 + ₹38.85 =
24. 24.91² =
25. 25.15 × 11 =
26. 26.39 + 31 + 16 + 19 =
27. 27.Check with nines: 79 × 79 = 6248. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 88 × 54 = 4752. Correct or wrong? (a) correct (b) wrong
29. 29.425 − 38 =
30. 30.15% of 820 =
31. 31.3 + 1 + 9 + 6 =
32. 32.58 + 56 + 54 + 22 =
33. 33.69² =
34. 34.473 + 67 =
35. 35.128 × 4 =
36. 36.Check with nines: 76 × 92 = 6996. Correct or wrong? (a) wrong (b) correct
37. 37.Best estimate of 82 × 32? (a) 4800 (b) 2400 (c) 24000 (d) 240
38. 38.2 + 8 + 6 + 6 + 2 =
39. 39.Check with nines: 46 × 27 = 1249. Correct or wrong? (a) wrong (b) correct
40. 40.78 × 4 =

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