Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 103 · 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. 1.15 × 19 =
2. 2.₹34.25 − ₹24.55 =
3. 3.71² =
4. 4.10% of 610 =
5. 5.55 × 15 =
6. 6.40 × 4 =
7. 7.12 × 16 =
8. 8.544 − 76 =
9. 9.429 + 28 =
10. 10.₹82.85 + ₹6.40 =
11. 11.51² =
12. 12.Best estimate of 303 × 9? (a) 2700 (b) 27000 (c) 270 (d) 5400
13. 13.960 ÷ 5 =
14. 14.19² =
15. 15.Check with nines: 872 + 213 = 1086. Correct or wrong? (a) wrong (b) correct
16. 16.₹85.80 + ₹48.65 =
17. 17.81² =
18. 18.18 × 16 =
19. 19.51 × 8 =
20. 20.42 × 8 =
21. 21.5% of 450 =
22. 22.650 ÷ 50 =
23. 23.42 × 15 =
24. 24.116 × 4 =
25. 25.Check with nines: 91 × 26 = 2366. Correct or wrong? (a) wrong (b) correct
26. 26.21² =
27. 27.₹64.05 + ₹41.50 =
28. 28.31² =
29. 29.₹95.50 + ₹35.75 =
30. 30.₹12.20 + ₹2.85 =
31. 31.85 + 97 =
32. 32.Check with nines: 44 × 75 = 3307. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 12 × 53 = 630. Correct or wrong? (a) correct (b) wrong
34. 34.41² =
35. 35.453 + 89 =
36. 36.571 − 89 =
37. 37.Check with nines: 29 × 74 = 2146. Correct or wrong? (a) wrong (b) correct
38. 38.91 × 50 =
39. 39.421 + 17 =
40. 40.₹92.90 − ₹10.15 =

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