Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 234 · 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.Best estimate of 59 × 51? (a) 3000 (b) 6000 (c) 300 (d) 30000
2. 2.Check with nines: 87 × 53 = 4607. Correct or wrong? (a) wrong (b) correct
3. 3.56 + 64 + 35 + 51 =
4. 4.15 × 17 =
5. 5.351 − 98 =
6. 6.50% of 470 =
7. 7.455 ÷ 5 =
8. 8.87 × 5 =
9. 9.17 × 12 =
10. 10.83 + 29 =
11. 11.71² =
12. 12.Check with nines: 509 + 251 = 760. Correct or wrong? (a) wrong (b) correct
13. 13.89² =
14. 14.563 − 16 =
15. 15.449 + 57 =
16. 16.40 + 97 =
17. 17.102 × 4 =
18. 18.39 × 5 =
19. 19.₹41.20 − ₹12.95 =
20. 20.Check with nines: 729 + 615 = 1345. Correct or wrong? (a) correct (b) wrong
21. 21.21² =
22. 22.47 × 15 =
23. 23.589 − 87 =
24. 24.1 + 8 + 8 + 2 =
25. 25.Check with nines: 751 + 191 = 934. Correct or wrong? (a) correct (b) wrong
26. 26.143 − 79 =
27. 27.28 + 67 + 51 + 57 =
28. 28.257 − 67 =
29. 29.23 + 60 + 62 + 27 =
30. 30.50 + 52 + 11 + 36 =
31. 31.50% of 550 =
32. 32.17 × 5 =
33. 33.41² =
34. 34.Check with nines: 64 × 33 = 2112. Correct or wrong? (a) correct (b) wrong
35. 35.44 × 50 =
36. 36.Best estimate of 397 × 6? (a) 24000 (b) 2400 (c) 240 (d) 4800
37. 37.16 + 54 + 11 + 70 =
38. 38.3 + 9 + 4 + 7 =
39. 39.27 + 84 + 74 + 43 =
40. 40.₹79.65 + ₹17.80 =

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