Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 767 · 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. 1.14 × 13 =
2. 2.6 + 8 + 9 + 1 + 5 =
3. 3.₹50.75 + ₹15.30 =
4. 4.51 × 5 =
5. 5.37 × 8 =
6. 6.3 + 2 + 7 + 1 =
7. 7.5 + 3 + 5 + 1 + 5 =
8. 8.18 × 12 =
9. 9.14 × 15 =
10. 10.₹85.70 − ₹17.30 =
11. 11.167 − 87 =
12. 12.384 − 67 =
13. 13.11 × 11 =
14. 14.372 + 68 =
15. 15.435 + 27 =
16. 16.Check with nines: 510 + 794 = 1307. Correct or wrong? (a) correct (b) wrong
17. 17.48 × 15 =
18. 18.79 + 68 + 80 + 67 =
19. 19.83 + 73 + 45 + 89 =
20. 20.26 × 15 =
21. 21.Check with nines: 558 + 360 = 921. Correct or wrong? (a) wrong (b) correct
22. 22.775 ÷ 25 =
23. 23.4 + 5 + 8 + 6 =
24. 24.72 × 4 =
25. 25.279 − 68 =
26. 26.48 + 89 =
27. 27.Best estimate of 901 × 3? (a) 270 (b) 27000 (c) 2700 (d) 5400
28. 28.69² =
29. 29.51 + 71 + 19 + 14 =
30. 30.Best estimate of 91 × 48? (a) 9000 (b) 45000 (c) 4500 (d) 450
31. 31.12 × 12 =
32. 32.69 + 18 + 82 + 39 =
33. 33.5% of 830 =
34. 34.₹75.30 + ₹21.15 =
35. 35.217 + 99 =
36. 36.7 + 3 + 9 + 8 =
37. 37.Check with nines: 717 + 517 = 1230. Correct or wrong? (a) correct (b) wrong
38. 38.90 − 66 =
39. 39.9 × 15 =
40. 40.93 × 50 =

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