Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 687 · 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.Best estimate of 802 × 3? (a) 24000 (b) 2400 (c) 4800 (d) 240
2. 2.16 × 18 =
3. 3.31 + 62 + 50 + 82 =
4. 4.34 + 61 + 54 + 38 =
5. 5.71² =
6. 6.1200 ÷ 25 =
7. 7.5 + 5 + 8 + 9 + 2 =
8. 8.₹59.70 + ₹13.20 =
9. 9.₹79.40 − ₹3.15 =
10. 10.19² =
11. 11.51² =
12. 12.47 × 15 =
13. 13.₹38.35 − ₹36.80 =
14. 14.₹66.10 + ₹28.75 =
15. 15.Check with nines: 676 + 819 = 1495. Correct or wrong? (a) correct (b) wrong
16. 16.404 + 68 =
17. 17.87 × 50 =
18. 18.10% of 680 =
19. 19.Best estimate of 19 × 68? (a) 2800 (b) 14000 (c) 1400 (d) 140
20. 20.2 + 3 + 2 + 8 =
21. 21.₹71.15 − ₹46.80 =
22. 22.51 × 8 =
23. 23.14 × 18 =
24. 24.29² =
25. 25.302 + 78 =
26. 26.40 × 50 =
27. 27.130 ÷ 5 =
28. 28.935 ÷ 5 =
29. 29.368 + 57 =
30. 30.15 × 12 =
31. 31.454 − 78 =
32. 32.Best estimate of 803 × 7? (a) 5600 (b) 11200 (c) 560 (d) 56000
33. 33.436 − 68 =
34. 34.31 × 4 =
35. 35.Check with nines: 135 + 811 = 951. Correct or wrong? (a) correct (b) wrong
36. 36.317 + 67 =
37. 37.Best estimate of 31 × 21? (a) 1200 (b) 6000 (c) 60 (d) 600
38. 38.86 × 4 =
39. 39.₹88.85 + ₹2.60 =
40. 40.Best estimate of 38 × 72? (a) 5600 (b) 2800 (c) 28000 (d) 280

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