Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 324 · 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. 1.17 × 50 =
2. 2.Best estimate of 42 × 59? (a) 24000 (b) 4800 (c) 2400 (d) 240
3. 3.Best estimate of 51 × 19? (a) 100 (b) 2000 (c) 10000 (d) 1000
4. 4.Best estimate of 298 × 6? (a) 1800 (b) 18000 (c) 180 (d) 3600
5. 5.11 × 15 =
6. 6.Check with nines: 38 × 69 = 2623. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 953 + 235 = 1188. Correct or wrong? (a) correct (b) wrong
8. 8.29 × 15 =
9. 9.61 + 87 + 20 + 22 =
10. 10.39 × 50 =
11. 11.55 × 8 =
12. 12.Best estimate of 601 × 8? (a) 4800 (b) 480 (c) 9600 (d) 48000
13. 13.18 × 17 =
14. 14.14 × 15 =
15. 15.529 − 89 =
16. 16.342 − 78 =
17. 17.1150 ÷ 50 =
18. 18.Check with nines: 361 + 281 = 642. Correct or wrong? (a) wrong (b) correct
19. 19.29² =
20. 20.50 × 5 =
21. 21.535 ÷ 5 =
22. 22.2 + 9 + 9 + 8 =
23. 23.5% of 140 =
24. 24.61 × 5 =
25. 25.31² =
26. 26.56 + 16 + 81 + 27 =
27. 27.₹36.25 + ₹49.10 =
28. 28.513 − 29 =
29. 29.13 × 12 =
30. 30.1125 ÷ 25 =
31. 31.5% of 360 =
32. 32.₹12.10 + ₹28.35 =
33. 33.471 + 77 =
34. 34.₹69.20 + ₹26.05 =
35. 35.22 + 83 + 34 + 58 =
36. 36.₹14.15 − ₹2.20 =
37. 37.454 − 68 =
38. 38.20% of 20 =
39. 39.Check with nines: 20 × 57 = 1137. Correct or wrong? (a) wrong (b) correct
40. 40.23 × 15 =

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