Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 948 · 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. 1.72 + 86 + 16 + 58 =
2. 2.1200 ÷ 25 =
3. 3.Best estimate of 897 × 8? (a) 720 (b) 14400 (c) 72000 (d) 7200
4. 4.₹37.25 − ₹9.60 =
5. 5.19² =
6. 6.Check with nines: 75 × 95 = 7122. Correct or wrong? (a) wrong (b) correct
7. 7.11 × 13 =
8. 8.316 + 79 =
9. 9.419 − 96 =
10. 10.19 × 4 =
11. 11.1075 ÷ 25 =
12. 12.58 × 15 =
13. 13.Check with nines: 82 × 77 = 6315. Correct or wrong? (a) correct (b) wrong
14. 14.Best estimate of 803 × 9? (a) 14400 (b) 7200 (c) 720 (d) 72000
15. 15.2 + 7 + 1 + 3 =
16. 16.13 × 12 =
17. 17.Best estimate of 301 × 7? (a) 4200 (b) 21000 (c) 210 (d) 2100
18. 18.49² =
19. 19.Best estimate of 19 × 78? (a) 16000 (b) 1600 (c) 160 (d) 3200
20. 20.1100 ÷ 25 =
21. 21.4 + 3 + 6 + 5 =
22. 22.Best estimate of 71 × 88? (a) 12600 (b) 630 (c) 6300 (d) 63000
23. 23.Best estimate of 41 × 72? (a) 2800 (b) 280 (c) 5600 (d) 28000
24. 24.825 ÷ 25 =
25. 25.Check with nines: 26 × 44 = 1144. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 145 + 798 = 943. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 536 + 844 = 1380. Correct or wrong? (a) correct (b) wrong
28. 28.50 × 15 =
29. 29.50% of 420 =
30. 30.31² =
31. 31.Best estimate of 68 × 39? (a) 2800 (b) 5600 (c) 28000 (d) 280
32. 32.₹25.60 − ₹13.45 =
33. 33.15 + 59 + 51 + 65 =
34. 34.475 ÷ 25 =
35. 35.50% of 490 =
36. 36.₹19.65 + ₹28.30 =
37. 37.53 + 17 =
38. 38.50% of 780 =
39. 39.Best estimate of 803 × 8? (a) 12800 (b) 640 (c) 6400 (d) 64000
40. 40.87 + 88 + 41 + 12 =

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