Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 707 · 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.Check with nines: 49 × 39 = 1911. Correct or wrong? (a) wrong (b) correct
2. 2.25% of 460 =
3. 3.Best estimate of 501 × 3? (a) 150 (b) 1500 (c) 15000 (d) 3000
4. 4.9 + 5 + 3 + 7 =
5. 5.Best estimate of 102 × 7? (a) 70 (b) 1400 (c) 7000 (d) 700
6. 6.491 + 27 =
7. 7.Check with nines: 52 × 67 = 3484. Correct or wrong? (a) correct (b) wrong
8. 8.19² =
9. 9.10% of 470 =
10. 10.1 + 9 + 1 + 7 + 7 =
11. 11.Check with nines: 52 × 70 = 3640. Correct or wrong? (a) wrong (b) correct
12. 12.450 ÷ 25 =
13. 13.56 × 15 =
14. 14.9 + 1 + 5 + 1 =
15. 15.900 ÷ 25 =
16. 16.415 − 16 =
17. 17.860 ÷ 5 =
18. 18.117 − 79 =
19. 19.342 − 46 =
20. 20.2 + 2 + 8 + 1 =
21. 21.80 × 4 =
22. 22.253 + 49 =
23. 23.₹70.80 − ₹5.25 =
24. 24.Best estimate of 199 × 9? (a) 18000 (b) 1800 (c) 3600 (d) 180
25. 25.136 × 4 =
26. 26.₹84.40 + ₹17.75 =
27. 27.₹34.05 − ₹14.50 =
28. 28.461 − 37 =
29. 29.680 ÷ 5 =
30. 30.58 × 15 =
31. 31.19 × 19 =
32. 32.51² =
33. 33.₹94.50 + ₹36.15 =
34. 34.5 + 3 + 1 + 9 =
35. 35.565 − 49 =
36. 36.43 × 15 =
37. 37.64 × 50 =
38. 38.5% of 160 =
39. 39.4 + 2 + 7 + 1 + 6 =
40. 40.243 − 68 =

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