Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 470 · 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. 1.24 × 15 =
2. 2.53 × 4 =
3. 3.Check with nines: 97 × 62 = 6014. Correct or wrong? (a) correct (b) wrong
4. 4.489 + 58 =
5. 5.72 + 13 + 14 + 87 =
6. 6.₹94.90 − ₹42.35 =
7. 7.57 × 5 =
8. 8.3 + 6 + 3 + 4 + 6 =
9. 9.₹60.55 + ₹42.55 =
10. 10.83 × 5 =
11. 11.₹89.20 + ₹14.55 =
12. 12.24 × 50 =
13. 13.70 × 50 =
14. 14.₹62.45 + ₹22.05 =
15. 15.8 × 15 =
16. 16.Best estimate of 497 × 3? (a) 150 (b) 1500 (c) 3000 (d) 15000
17. 17.18 × 19 =
18. 18.55 + 18 + 81 + 20 =
19. 19.19² =
20. 20.11 × 14 =
21. 21.Check with nines: 438 + 591 = 1037. Correct or wrong? (a) wrong (b) correct
22. 22.78 × 4 =
23. 23.79 × 50 =
24. 24.77 + 59 + 28 + 89 =
25. 25.170 − 56 =
26. 26.Check with nines: 94 × 68 = 6390. Correct or wrong? (a) correct (b) wrong
27. 27.63 + 22 + 67 + 83 =
28. 28.581 − 77 =
29. 29.500 − 66 =
30. 30.20% of 620 =
31. 31.Best estimate of 18 × 91? (a) 1800 (b) 3600 (c) 180 (d) 18000
32. 32.7 + 1 + 3 + 3 =
33. 33.20% of 250 =
34. 34.610 ÷ 5 =
35. 35.256 − 28 =
36. 36.550 ÷ 25 =
37. 37.57 + 61 + 50 + 17 =
38. 38.Check with nines: 405 + 229 = 630. Correct or wrong? (a) correct (b) wrong
39. 39.3 + 1 + 8 + 2 =
40. 40.63 × 50 =

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