Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 946 · 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 × 18 =
2. 2.Check with nines: 31 × 66 = 2051. Correct or wrong? (a) wrong (b) correct
3. 3.9 + 2 + 8 + 8 =
4. 4.19² =
5. 5.5 + 6 + 5 + 9 =
6. 6.₹61.85 + ₹20.75 =
7. 7.Best estimate of 798 × 9? (a) 7200 (b) 72000 (c) 14400 (d) 720
8. 8.34 × 15 =
9. 9.Check with nines: 171 + 382 = 553. Correct or wrong? (a) wrong (b) correct
10. 10.177 + 89 =
11. 11.₹74.45 + ₹46.85 =
12. 12.Best estimate of 89 × 38? (a) 7200 (b) 360 (c) 3600 (d) 36000
13. 13.7 + 7 + 3 + 3 + 9 =
14. 14.7 + 9 + 7 + 1 + 8 =
15. 15.59² =
16. 16.14 × 15 =
17. 17.582 − 26 =
18. 18.29² =
19. 19.52 × 5 =
20. 20.81 × 5 =
21. 21.16 × 19 =
22. 22.551 − 68 =
23. 23.530 ÷ 5 =
24. 24.44 + 23 + 62 + 48 =
25. 25.6 + 4 + 9 + 3 + 7 =
26. 26.508 − 97 =
27. 27.17 × 18 =
28. 28.Check with nines: 46 × 60 = 2753. Correct or wrong? (a) correct (b) wrong
29. 29.₹8.95 + ₹6.15 =
30. 30.₹14.90 + ₹21.25 =
31. 31.14 + 85 + 83 + 53 =
32. 32.125 + 19 =
33. 33.50% of 30 =
34. 34.3 + 7 + 5 + 1 =
35. 35.14 × 8 =
36. 36.805 ÷ 5 =
37. 37.Best estimate of 68 × 71? (a) 490 (b) 49000 (c) 9800 (d) 4900
38. 38.12 + 52 + 16 + 78 =
39. 39.Check with nines: 17 × 27 = 467. Correct or wrong? (a) correct (b) wrong
40. 40.Best estimate of 902 × 3? (a) 27000 (b) 5400 (c) 270 (d) 2700

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