Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 515 · 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. 1.289 + 99 =
2. 2.25% of 820 =
3. 3.66 × 8 =
4. 4.Best estimate of 79 × 91? (a) 14400 (b) 7200 (c) 720 (d) 72000
5. 5.Best estimate of 62 × 61? (a) 360 (b) 36000 (c) 3600 (d) 7200
6. 6.63 × 8 =
7. 7.4 + 7 + 3 + 3 =
8. 8.31 + 19 + 47 + 16 =
9. 9.Check with nines: 40 × 98 = 3920. Correct or wrong? (a) correct (b) wrong
10. 10.₹67.95 + ₹32.95 =
11. 11.259 + 87 =
12. 12.59 × 15 =
13. 13.89² =
14. 14.535 − 56 =
15. 15.29² =
16. 16.Best estimate of 71 × 22? (a) 140 (b) 2800 (c) 14000 (d) 1400
17. 17.360 − 98 =
18. 18.41 × 5 =
19. 19.215 ÷ 5 =
20. 20.65 × 5 =
21. 21.140 + 58 =
22. 22.58 × 8 =
23. 23.359 + 19 =
24. 24.28 × 50 =
25. 25.Best estimate of 801 × 6? (a) 9600 (b) 4800 (c) 480 (d) 48000
26. 26.Check with nines: 545 + 362 = 912. Correct or wrong? (a) correct (b) wrong
27. 27.95 × 50 =
28. 28.50% of 300 =
29. 29.1 + 1 + 1 + 9 + 7 =
30. 30.15% of 210 =
31. 31.27 × 15 =
32. 32.83 + 87 + 39 + 27 =
33. 33.31² =
34. 34.36 × 8 =
35. 35.3 + 5 + 1 + 9 =
36. 36.77 + 16 + 56 + 25 =
37. 37.1400 ÷ 25 =
38. 38.51 × 5 =
39. 39.550 ÷ 25 =
40. 40.Check with nines: 91 × 37 = 3367. Correct or wrong? (a) wrong (b) correct

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