Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 529 · 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 203 × 6? (a) 120 (b) 1200 (c) 2400 (d) 12000
2. 2.6 × 15 =
3. 3.79² =
4. 4.60 × 15 =
5. 5.218 − 47 =
6. 6.₹96.65 − ₹10.15 =
7. 7.9 + 1 + 1 + 3 =
8. 8.48 × 4 =
9. 9.₹19.55 − ₹9.35 =
10. 10.245 − 56 =
11. 11.Best estimate of 68 × 62? (a) 420 (b) 4200 (c) 8400 (d) 42000
12. 12.429 + 57 =
13. 13.16 × 19 =
14. 14.14 × 8 =
15. 15.303 − 76 =
16. 16.₹35.05 − ₹20.55 =
17. 17.25 × 15 =
18. 18.Best estimate of 38 × 39? (a) 160 (b) 3200 (c) 16000 (d) 1600
19. 19.13 × 15 =
20. 20.80 + 24 + 76 + 42 =
21. 21.14 × 12 =
22. 22.29 + 34 + 68 + 43 =
23. 23.16 + 12 + 26 + 50 =
24. 24.38 × 5 =
25. 25.Best estimate of 801 × 9? (a) 72000 (b) 14400 (c) 720 (d) 7200
26. 26.Best estimate of 99 × 7? (a) 700 (b) 70 (c) 1400 (d) 7000
27. 27.20 + 61 + 16 + 39 =
28. 28.5% of 510 =
29. 29.6 + 8 + 3 + 2 =
30. 30.110 − 47 =
31. 31.94 + 58 =
32. 32.Best estimate of 52 × 31? (a) 15000 (b) 150 (c) 3000 (d) 1500
33. 33.15% of 780 =
34. 34.Check with nines: 628 + 835 = 1463. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 800 + 190 = 990. Correct or wrong? (a) wrong (b) correct
36. 36.8 + 3 + 9 + 7 + 7 =
37. 37.5% of 790 =
38. 38.12 × 13 =
39. 39.35 + 44 + 82 + 60 =
40. 40.80 × 50 =

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