Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 499 · 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. 1.297 − 77 =
2. 2.13 × 50 =
3. 3.450 ÷ 50 =
4. 4.Check with nines: 340 + 684 = 1024. Correct or wrong? (a) wrong (b) correct
5. 5.45 × 15 =
6. 6.Best estimate of 81 × 88? (a) 72000 (b) 7200 (c) 14400 (d) 720
7. 7.Best estimate of 79 × 32? (a) 4800 (b) 2400 (c) 240 (d) 24000
8. 8.12 × 19 =
9. 9.5% of 890 =
10. 10.Check with nines: 718 + 167 = 885. Correct or wrong? (a) wrong (b) correct
11. 11.71² =
12. 12.11 × 14 =
13. 13.39² =
14. 14.485 − 27 =
15. 15.Check with nines: 419 + 163 = 589. Correct or wrong? (a) correct (b) wrong
16. 16.159 + 29 =
17. 17.Best estimate of 41 × 19? (a) 8000 (b) 80 (c) 1600 (d) 800
18. 18.25% of 190 =
19. 19.Check with nines: 53 × 15 = 795. Correct or wrong? (a) wrong (b) correct
20. 20.₹82.75 − ₹9.30 =
21. 21.Best estimate of 79 × 29? (a) 4800 (b) 240 (c) 2400 (d) 24000
22. 22.25% of 500 =
23. 23.17 × 17 =
24. 24.274 + 29 =
25. 25.315 − 88 =
26. 26.384 + 88 =
27. 27.25 × 15 =
28. 28.₹25.85 + ₹32.15 =
29. 29.₹24.30 − ₹19.75 =
30. 30.17 × 17 =
31. 31.₹35.05 − ₹17.35 =
32. 32.₹37.40 − ₹29.55 =
33. 33.326 + 48 =
34. 34.3 + 3 + 5 + 7 =
35. 35.72 + 19 + 71 + 60 =
36. 36.Check with nines: 16 × 45 = 717. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 43 × 76 = 3268. Correct or wrong? (a) correct (b) wrong
38. 38.5% of 420 =
39. 39.50 + 54 + 48 + 53 =
40. 40.25 × 15 =

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