Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 865 · 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 41 × 28? (a) 12000 (b) 1200 (c) 2400 (d) 120
2. 2.Check with nines: 35 × 34 = 1190. Correct or wrong? (a) wrong (b) correct
3. 3.64 × 50 =
4. 4.27 × 8 =
5. 5.20% of 140 =
6. 6.Check with nines: 83 × 99 = 8215. Correct or wrong? (a) wrong (b) correct
7. 7.38 + 68 =
8. 8.620 ÷ 5 =
9. 9.58 × 50 =
10. 10.31 + 21 + 44 + 58 =
11. 11.18 × 19 =
12. 12.₹15.30 − ₹9.05 =
13. 13.92 − 79 =
14. 14.Best estimate of 797 × 9? (a) 7200 (b) 14400 (c) 720 (d) 72000
15. 15.15 × 13 =
16. 16.29² =
17. 17.90 × 50 =
18. 18.15% of 160 =
19. 19.₹32.05 + ₹14.30 =
20. 20.Check with nines: 280 + 650 = 936. Correct or wrong? (a) correct (b) wrong
21. 21.Best estimate of 82 × 41? (a) 3200 (b) 6400 (c) 32000 (d) 320
22. 22.38 × 4 =
23. 23.15% of 90 =
24. 24.22 × 8 =
25. 25.200 ÷ 25 =
26. 26.15 × 14 =
27. 27.Check with nines: 143 + 469 = 609. Correct or wrong? (a) wrong (b) correct
28. 28.20% of 540 =
29. 29.340 ÷ 5 =
30. 30.459 − 58 =
31. 31.₹85.35 − ₹2.45 =
32. 32.65 + 33 + 53 + 12 =
33. 33.₹42.05 + ₹20.15 =
34. 34.13 × 18 =
35. 35.47 + 62 + 83 + 18 =
36. 36.47 × 8 =
37. 37.5 + 6 + 5 + 5 =
38. 38.16 × 15 =
39. 39.12 × 15 =
40. 40.Check with nines: 992 + 467 = 1459. Correct or wrong? (a) correct (b) wrong

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