Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 766 · 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. 1.74 × 5 =
2. 2.246 + 37 =
3. 3.₹20.35 − ₹15.45 =
4. 4.1% of 160 =
5. 5.Best estimate of 48 × 21? (a) 10000 (b) 100 (c) 1000 (d) 2000
6. 6.Best estimate of 597 × 7? (a) 42000 (b) 420 (c) 8400 (d) 4200
7. 7.113 − 58 =
8. 8.Best estimate of 29 × 39? (a) 120 (b) 12000 (c) 2400 (d) 1200
9. 9.₹11.10 + ₹47.95 =
10. 10.79 + 22 + 26 + 76 =
11. 11.Check with nines: 395 + 845 = 1233. Correct or wrong? (a) wrong (b) correct
12. 12.₹45.75 − ₹21.30 =
13. 13.40 × 5 =
14. 14.72 × 50 =
15. 15.18 × 8 =
16. 16.16 × 17 =
17. 17.42 + 78 + 41 + 50 =
18. 18.74 × 4 =
19. 19.Check with nines: 326 + 897 = 1223. Correct or wrong? (a) correct (b) wrong
20. 20.13 × 16 =
21. 21.1075 ÷ 25 =
22. 22.29² =
23. 23.Check with nines: 72 × 58 = 4176. Correct or wrong? (a) wrong (b) correct
24. 24.394 + 69 =
25. 25.56 × 15 =
26. 26.91² =
27. 27.31 × 15 =
28. 28.57 × 8 =
29. 29.496 + 28 =
30. 30.₹9.65 + ₹49.15 =
31. 31.83 × 50 =
32. 32.438 + 47 =
33. 33.₹73.35 − ₹28.20 =
34. 34.49 + 19 + 11 + 14 =
35. 35.18 × 16 =
36. 36.Check with nines: 64 × 69 = 4416. Correct or wrong? (a) correct (b) wrong
37. 37.434 − 36 =
38. 38.1% of 470 =
39. 39.Check with nines: 58 × 97 = 5626. Correct or wrong? (a) correct (b) wrong
40. 40.350 ÷ 50 =

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