Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 105 · 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. 1.30 + 71 + 54 + 87 =
2. 2.1% of 180 =
3. 3.780 ÷ 5 =
4. 4.Best estimate of 798 × 4? (a) 6400 (b) 320 (c) 32000 (d) 3200
5. 5.450 ÷ 50 =
6. 6.18 × 8 =
7. 7.₹80.95 + ₹46.95 =
8. 8.61² =
9. 9.20% of 620 =
10. 10.Check with nines: 151 + 978 = 1129. Correct or wrong? (a) wrong (b) correct
11. 11.6 + 3 + 2 + 2 + 8 =
12. 12.₹29.10 − ₹26.45 =
13. 13.Check with nines: 93 × 53 = 4929. Correct or wrong? (a) correct (b) wrong
14. 14.14 × 11 =
15. 15.16 × 50 =
16. 16.5% of 480 =
17. 17.Check with nines: 23 × 36 = 823. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 585 + 687 = 1271. Correct or wrong? (a) correct (b) wrong
19. 19.41² =
20. 20.19² =
21. 21.448 − 59 =
22. 22.11 × 18 =
23. 23.18 × 11 =
24. 24.₹21.65 − ₹8.55 =
25. 25.165 + 38 =
26. 26.162 + 87 =
27. 27.168 + 38 =
28. 28.145 − 36 =
29. 29.567 − 19 =
30. 30.5 + 5 + 9 + 4 + 1 =
31. 31.15% of 150 =
32. 32.347 + 29 =
33. 33.Check with nines: 846 + 178 = 1024. Correct or wrong? (a) wrong (b) correct
34. 34.11 × 17 =
35. 35.84 × 50 =
36. 36.472 − 67 =
37. 37.43 + 40 + 43 + 16 =
38. 38.1% of 580 =
39. 39.136 − 87 =
40. 40.Best estimate of 22 × 81? (a) 1600 (b) 3200 (c) 160 (d) 16000

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