Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 274 · 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. 1.21² =
2. 2.900 ÷ 50 =
3. 3.Check with nines: 848 + 681 = 1529. Correct or wrong? (a) wrong (b) correct
4. 4.53 × 4 =
5. 5.51 + 67 =
6. 6.67 + 53 + 30 + 29 =
7. 7.5% of 250 =
8. 8.Best estimate of 97 × 3? (a) 300 (b) 30 (c) 600 (d) 3000
9. 9.16 × 12 =
10. 10.31² =
11. 11.95 × 5 =
12. 12.20 × 5 =
13. 13.₹98.75 + ₹36.25 =
14. 14.9 + 3 + 1 + 9 + 1 =
15. 15.Check with nines: 290 + 731 = 1016. Correct or wrong? (a) correct (b) wrong
16. 16.17 + 45 + 27 + 25 =
17. 17.323 + 27 =
18. 18.Best estimate of 81 × 42? (a) 32000 (b) 3200 (c) 6400 (d) 320
19. 19.67 × 4 =
20. 20.Check with nines: 93 × 96 = 8928. Correct or wrong? (a) wrong (b) correct
21. 21.69 + 56 + 13 + 26 =
22. 22.332 − 38 =
23. 23.25% of 820 =
24. 24.96 − 27 =
25. 25.₹32.60 + ₹37.50 =
26. 26.890 ÷ 5 =
27. 27.198 + 17 =
28. 28.₹43.10 − ₹5.15 =
29. 29.1350 ÷ 25 =
30. 30.46 × 4 =
31. 31.Check with nines: 842 + 385 = 1219. Correct or wrong? (a) correct (b) wrong
32. 32.₹47.95 − ₹44.65 =
33. 33.257 + 57 =
34. 34.1% of 470 =
35. 35.₹47.35 − ₹30.20 =
36. 36.260 + 37 =
37. 37.29 × 15 =
38. 38.Best estimate of 602 × 4? (a) 240 (b) 4800 (c) 2400 (d) 24000
39. 39.586 − 18 =
40. 40.25 × 8 =

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