Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 812 · 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. 1.100 + 19 =
2. 2.₹59.05 + ₹43.55 =
3. 3.5 + 5 + 7 + 3 + 1 =
4. 4.21 × 4 =
5. 5.165 − 16 =
6. 6.Best estimate of 71 × 29? (a) 2100 (b) 21000 (c) 4200 (d) 210
7. 7.16 × 19 =
8. 8.Check with nines: 216 + 194 = 410. Correct or wrong? (a) wrong (b) correct
9. 9.91² =
10. 10.50% of 590 =
11. 11.89² =
12. 12.282 + 38 =
13. 13.Check with nines: 607 + 178 = 778. Correct or wrong? (a) wrong (b) correct
14. 14.26 × 8 =
15. 15.245 − 27 =
16. 16.Best estimate of 298 × 4? (a) 120 (b) 12000 (c) 1200 (d) 2400
17. 17.18 × 14 =
18. 18.1% of 810 =
19. 19.2 + 7 + 7 + 3 + 9 =
20. 20.5% of 300 =
21. 21.1225 ÷ 25 =
22. 22.28 × 50 =
23. 23.₹31.75 + ₹36.05 =
24. 24.23 + 48 + 24 + 87 =
25. 25.8 + 7 + 9 + 3 + 9 =
26. 26.61² =
27. 27.Best estimate of 101 × 8? (a) 1600 (b) 8000 (c) 800 (d) 80
28. 28.12 × 50 =
29. 29.450 ÷ 25 =
30. 30.₹40.80 − ₹9.40 =
31. 31.Check with nines: 26 × 22 = 564. Correct or wrong? (a) correct (b) wrong
32. 32.520 ÷ 5 =
33. 33.43 × 5 =
34. 34.447 + 88 =
35. 35.171 − 66 =
36. 36.91² =
37. 37.1% of 580 =
38. 38.42 × 8 =
39. 39.12 × 15 =
40. 40.12 × 13 =

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