Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 348 · 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 71 × 58? (a) 42000 (b) 8400 (c) 420 (d) 4200
2. 2.Check with nines: 494 + 186 = 682. Correct or wrong? (a) correct (b) wrong
3. 3.3 + 2 + 1 + 9 =
4. 4.22 × 15 =
5. 5.58 × 8 =
6. 6.10% of 500 =
7. 7.95 − 46 =
8. 8.₹68.15 − ₹40.35 =
9. 9.5 + 9 + 2 + 1 =
10. 10.₹91.90 − ₹26.30 =
11. 11.1% of 50 =
12. 12.6 + 4 + 1 + 3 + 3 =
13. 13.Check with nines: 15 × 30 = 447. Correct or wrong? (a) correct (b) wrong
14. 14.₹14.80 + ₹15.35 =
15. 15.45 × 50 =
16. 16.19 × 5 =
17. 17.209 + 58 =
18. 18.89² =
19. 19.8 + 9 + 5 + 5 =
20. 20.69 + 27 + 19 + 32 =
21. 21.Best estimate of 72 × 38? (a) 28000 (b) 5600 (c) 2800 (d) 280
22. 22.₹86.05 − ₹3.10 =
23. 23.87 × 5 =
24. 24.24 + 31 + 75 + 13 =
25. 25.20% of 820 =
26. 26.Check with nines: 65 × 36 = 2344. Correct or wrong? (a) correct (b) wrong
27. 27.57 + 60 + 71 + 37 =
28. 28.25% of 240 =
29. 29.431 + 58 =
30. 30.9 + 9 + 1 + 7 =
31. 31.55 + 11 + 30 + 52 =
32. 32.Check with nines: 85 × 69 = 5865. Correct or wrong? (a) wrong (b) correct
33. 33.19 × 19 =
34. 34.89² =
35. 35.Check with nines: 527 + 533 = 1060. Correct or wrong? (a) wrong (b) correct
36. 36.52 × 15 =
37. 37.₹49.05 − ₹42.25 =
38. 38.58 × 8 =
39. 39.61 × 8 =
40. 40.39 + 11 + 83 + 87 =

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