Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 211 · 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.₹58.80 + ₹15.15 =
2. 2.39 × 15 =
3. 3.5% of 740 =
4. 4.13 × 18 =
5. 5.₹17.70 + ₹11.35 =
6. 6.Best estimate of 601 × 6? (a) 3600 (b) 360 (c) 36000 (d) 7200
7. 7.₹16.75 + ₹31.30 =
8. 8.Check with nines: 29 × 45 = 1305. Correct or wrong? (a) correct (b) wrong
9. 9.19² =
10. 10.Check with nines: 426 + 606 = 1033. Correct or wrong? (a) wrong (b) correct
11. 11.49 × 15 =
12. 12.390 ÷ 5 =
13. 13.15 × 8 =
14. 14.16 × 17 =
15. 15.25% of 720 =
16. 16.Check with nines: 644 + 860 = 1504. Correct or wrong? (a) correct (b) wrong
17. 17.358 + 69 =
18. 18.Best estimate of 28 × 81? (a) 240 (b) 24000 (c) 4800 (d) 2400
19. 19.155 × 4 =
20. 20.150 ÷ 50 =
21. 21.50 × 5 =
22. 22.62 × 15 =
23. 23.39² =
24. 24.50 + 60 + 76 + 70 =
25. 25.12 × 13 =
26. 26.54 + 34 + 77 + 18 =
27. 27.15% of 300 =
28. 28.Check with nines: 38 × 81 = 3078. Correct or wrong? (a) correct (b) wrong
29. 29.₹58.15 + ₹14.40 =
30. 30.Best estimate of 28 × 28? (a) 90 (b) 900 (c) 9000 (d) 1800
31. 31.44 + 33 + 35 + 29 =
32. 32.4 + 7 + 3 + 3 =
33. 33.2 + 3 + 1 + 8 =
34. 34.150 + 89 =
35. 35.Best estimate of 91 × 72? (a) 630 (b) 12600 (c) 63000 (d) 6300
36. 36.Check with nines: 32 × 51 = 1632. Correct or wrong? (a) correct (b) wrong
37. 37.91² =
38. 38.Check with nines: 512 + 137 = 649. Correct or wrong? (a) wrong (b) correct
39. 39.33 × 15 =
40. 40.50% of 690 =

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