Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 422 · 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. 1.11 × 15 =
2. 2.Check with nines: 72 × 60 = 4320. Correct or wrong? (a) wrong (b) correct
3. 3.₹47.35 − ₹46.40 =
4. 4.8 + 2 + 5 + 5 =
5. 5.5 + 2 + 6 + 4 + 6 =
6. 6.15 × 18 =
7. 7.388 − 96 =
8. 8.750 ÷ 5 =
9. 9.66 × 50 =
10. 10.41² =
11. 11.925 ÷ 25 =
12. 12.90 − 29 =
13. 13.₹67.15 − ₹25.35 =
14. 14.Check with nines: 621 + 860 = 1487. Correct or wrong? (a) wrong (b) correct
15. 15.300 ÷ 50 =
16. 16.Check with nines: 340 + 292 = 631. Correct or wrong? (a) wrong (b) correct
17. 17.44 × 15 =
18. 18.1 + 6 + 9 + 5 =
19. 19.1650 ÷ 50 =
20. 20.7 × 15 =
21. 21.Check with nines: 221 + 491 = 707. Correct or wrong? (a) wrong (b) correct
22. 22.Best estimate of 48 × 72? (a) 35000 (b) 7000 (c) 350 (d) 3500
23. 23.16 × 5 =
24. 24.₹76.20 − ₹4.55 =
25. 25.₹76.60 + ₹25.30 =
26. 26.15 × 19 =
27. 27.17 × 15 =
28. 28.1% of 900 =
29. 29.10% of 820 =
30. 30.325 + 28 =
31. 31.89 × 50 =
32. 32.51² =
33. 33.Best estimate of 32 × 18? (a) 60 (b) 600 (c) 6000 (d) 1200
34. 34.450 ÷ 50 =
35. 35.₹49.70 − ₹11.30 =
36. 36.31² =
37. 37.525 ÷ 25 =
38. 38.478 − 79 =
39. 39.1 + 2 + 3 + 9 =
40. 40.254 + 98 =

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