Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 585 · 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. 1.13 × 8 =
2. 2.1075 ÷ 25 =
3. 3.₹84.20 + ₹35.75 =
4. 4.69 × 5 =
5. 5.Check with nines: 52 × 23 = 1196. Correct or wrong? (a) correct (b) wrong
6. 6.596 − 98 =
7. 7.4 + 3 + 5 + 6 =
8. 8.41 × 4 =
9. 9.71² =
10. 10.50% of 600 =
11. 11.₹24.65 + ₹7.65 =
12. 12.Best estimate of 69 × 49? (a) 7000 (b) 3500 (c) 35000 (d) 350
13. 13.₹64.95 + ₹12.85 =
14. 14.69² =
15. 15.37 + 21 + 88 + 61 =
16. 16.56 + 80 + 81 + 12 =
17. 17.171 − 17 =
18. 18.1750 ÷ 50 =
19. 19.1 + 8 + 8 + 8 + 2 =
20. 20.Check with nines: 49 × 57 = 2792. Correct or wrong? (a) wrong (b) correct
21. 21.Best estimate of 32 × 68? (a) 2100 (b) 4200 (c) 210 (d) 21000
22. 22.Best estimate of 97 × 4? (a) 40 (b) 4000 (c) 800 (d) 400
23. 23.17 × 11 =
24. 24.463 − 16 =
25. 25.25% of 450 =
26. 26.11 × 17 =
27. 27.241 + 37 =
28. 28.337 + 47 =
29. 29.41² =
30. 30.Check with nines: 61 × 33 = 2014. Correct or wrong? (a) wrong (b) correct
31. 31.51² =
32. 32.41 + 34 + 87 + 80 =
33. 33.31 + 49 + 21 + 48 =
34. 34.49² =
35. 35.7 + 9 + 3 + 2 =
36. 36.₹53.65 + ₹41.75 =
37. 37.129 + 87 =
38. 38.5% of 410 =
39. 39.₹86.65 − ₹33.55 =
40. 40.128 − 67 =

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