Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 265 · 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 × 19 =
2. 2.51² =
3. 3.₹50.45 + ₹49.35 =
4. 4.25% of 670 =
5. 5.18 × 14 =
6. 6.Check with nines: 858 + 391 = 1249. Correct or wrong? (a) correct (b) wrong
7. 7.18 + 31 + 63 + 28 =
8. 8.39 × 15 =
9. 9.413 + 97 =
10. 10.58 × 50 =
11. 11.1 + 9 + 7 + 7 + 3 =
12. 12.93 × 50 =
13. 13.31² =
14. 14.Check with nines: 409 + 514 = 921. Correct or wrong? (a) wrong (b) correct
15. 15.Best estimate of 398 × 4? (a) 1600 (b) 16000 (c) 3200 (d) 160
16. 16.21 × 15 =
17. 17.588 − 29 =
18. 18.2 + 9 + 8 + 1 =
19. 19.96 × 5 =
20. 20.₹29.65 + ₹5.65 =
21. 21.13 × 15 =
22. 22.47 × 15 =
23. 23.38 × 15 =
24. 24.7 + 4 + 5 + 1 + 9 =
25. 25.4 × 15 =
26. 26.5 + 5 + 5 + 8 + 7 =
27. 27.₹55.20 + ₹36.40 =
28. 28.18 × 16 =
29. 29.31² =
30. 30.245 + 67 =
31. 31.7 + 5 + 4 + 1 + 3 =
32. 32.Check with nines: 60 × 49 = 2940. Correct or wrong? (a) correct (b) wrong
33. 33.164 + 68 =
34. 34.537 − 79 =
35. 35.41 × 8 =
36. 36.80 ÷ 5 =
37. 37.735 ÷ 5 =
38. 38.Check with nines: 581 + 886 = 1467. Correct or wrong? (a) wrong (b) correct
39. 39.765 ÷ 5 =
40. 40.268 − 19 =

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