Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 891 · 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.₹44.10 + ₹33.25 =
2. 2.1% of 50 =
3. 3.Check with nines: 749 + 125 = 874. Correct or wrong? (a) correct (b) wrong
4. 4.137 + 58 =
5. 5.11 × 17 =
6. 6.11 + 23 + 20 + 34 =
7. 7.95 ÷ 5 =
8. 8.Check with nines: 95 × 65 = 6168. Correct or wrong? (a) wrong (b) correct
9. 9.102 × 4 =
10. 10.21² =
11. 11.25 × 4 =
12. 12.700 ÷ 50 =
13. 13.900 ÷ 25 =
14. 14.320 ÷ 5 =
15. 15.108 × 4 =
16. 16.Best estimate of 598 × 6? (a) 7200 (b) 360 (c) 36000 (d) 3600
17. 17.63 × 4 =
18. 18.Best estimate of 903 × 4? (a) 7200 (b) 3600 (c) 360 (d) 36000
19. 19.25% of 70 =
20. 20.Best estimate of 501 × 5? (a) 2500 (b) 250 (c) 25000 (d) 5000
21. 21.Check with nines: 88 × 38 = 3343. Correct or wrong? (a) correct (b) wrong
22. 22.8 + 4 + 2 + 7 =
23. 23.760 ÷ 5 =
24. 24.89² =
25. 25.Check with nines: 244 + 676 = 920. Correct or wrong? (a) wrong (b) correct
26. 26.15 × 5 =
27. 27.12 × 14 =
28. 28.569 − 17 =
29. 29.122 − 86 =
30. 30.₹21.15 − ₹13.05 =
31. 31.Best estimate of 59 × 38? (a) 4800 (b) 240 (c) 2400 (d) 24000
32. 32.449 − 56 =
33. 33.17 × 12 =
34. 34.₹71.80 + ₹42.55 =
35. 35.408 − 46 =
36. 36.₹48.65 − ₹39.25 =
37. 37.₹33.20 − ₹21.15 =
38. 38.1% of 550 =
39. 39.Check with nines: 38 × 83 = 3154. Correct or wrong? (a) correct (b) wrong
40. 40.5 + 2 + 8 + 5 + 8 =

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