Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 292 · 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. 1.24 × 15 =
2. 2.27 × 8 =
3. 3.457 + 87 =
4. 4.50% of 330 =
5. 5.32 + 33 + 68 + 84 =
6. 6.21² =
7. 7.348 + 59 =
8. 8.19² =
9. 9.Check with nines: 81 × 15 = 1219. Correct or wrong? (a) wrong (b) correct
10. 10.398 + 98 =
11. 11.32 × 5 =
12. 12.53 + 73 + 87 + 78 =
13. 13.19 × 15 =
14. 14.70 × 8 =
15. 15.5 + 2 + 2 + 2 + 5 =
16. 16.₹22.35 + ₹2.80 =
17. 17.21 × 50 =
18. 18.21² =
19. 19.13 × 4 =
20. 20.5 + 5 + 7 + 5 =
21. 21.18 × 12 =
22. 22.Best estimate of 89 × 28? (a) 2700 (b) 5400 (c) 270 (d) 27000
23. 23.50% of 700 =
24. 24.5 + 9 + 7 + 3 =
25. 25.84 × 4 =
26. 26.28 + 72 + 40 + 22 =
27. 27.281 − 66 =
28. 28.₹28.55 − ₹20.20 =
29. 29.81² =
30. 30.1200 ÷ 50 =
31. 31.Best estimate of 21 × 38? (a) 800 (b) 1600 (c) 80 (d) 8000
32. 32.Best estimate of 901 × 5? (a) 450 (b) 9000 (c) 4500 (d) 45000
33. 33.Best estimate of 19 × 72? (a) 1400 (b) 2800 (c) 140 (d) 14000
34. 34.6 + 6 + 5 + 5 =
35. 35.86 × 50 =
36. 36.108 − 88 =
37. 37.Check with nines: 68 × 31 = 2105. Correct or wrong? (a) wrong (b) correct
38. 38.18 × 18 =
39. 39.18 × 16 =
40. 40.6 × 15 =

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