Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 239 · 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. 1.590 − 98 =
2. 2.Check with nines: 12 × 42 = 504. Correct or wrong? (a) wrong (b) correct
3. 3.77 × 50 =
4. 4.14 × 15 =
5. 5.12 × 5 =
6. 6.1750 ÷ 50 =
7. 7.19 × 12 =
8. 8.14 × 11 =
9. 9.6 × 15 =
10. 10.89 × 5 =
11. 11.52 × 5 =
12. 12.12 × 18 =
13. 13.₹89.30 + ₹2.45 =
14. 14.24 × 5 =
15. 15.133 − 79 =
16. 16.31² =
17. 17.25% of 790 =
18. 18.Check with nines: 23 × 45 = 1027. Correct or wrong? (a) correct (b) wrong
19. 19.10% of 230 =
20. 20.71² =
21. 21.92 × 5 =
22. 22.1% of 250 =
23. 23.1150 ÷ 25 =
24. 24.Check with nines: 422 + 526 = 948. Correct or wrong? (a) correct (b) wrong
25. 25.1250 ÷ 50 =
26. 26.2 + 7 + 2 + 8 + 1 =
27. 27.4 + 3 + 8 + 7 + 8 =
28. 28.354 − 27 =
29. 29.75 × 8 =
30. 30.3 + 7 + 7 + 7 + 7 =
31. 31.Best estimate of 702 × 5? (a) 35000 (b) 7000 (c) 350 (d) 3500
32. 32.515 ÷ 5 =
33. 33.9 + 1 + 6 + 7 + 4 =
34. 34.532 − 57 =
35. 35.31 × 15 =
36. 36.Best estimate of 68 × 92? (a) 12600 (b) 630 (c) 63000 (d) 6300
37. 37.43 × 5 =
38. 38.31 × 15 =
39. 39.488 + 47 =
40. 40.74 + 16 + 81 + 63 =

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