Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 364 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.15² =
2. 2.89 − 28 =
3. 3.A train leaves at 2:40 and reaches the next city at 4:20. How many minutes is the journey?
4. 4.A train leaves at 1:15 and reaches the next city at 2:35. How many minutes is the journey?
5. 5.45 children stand in rows of 7. How many full rows can they make?
6. 6.9 + 8 =
7. 7.Double 48 =
8. 8.You buy a box of crayons for ₹20 and a pen for ₹15. You pay with a ₹100 note. How much change do you get, in rupees?
9. 9.14 × 8 =
10. 10.18² =
11. 11.9 + 2 =
12. 12.You buy a kite for ₹478 and pay with a ₹500 note. How much change do you get, in rupees?
13. 13.25% of ₹590 =
14. 14.44 laddoos are packed in boxes of 3. How many laddoos are left over?
15. 15.50 + 48 =
16. 16.Best estimate of 24 × 51? (a) 1000 (b) 10000 (c) 100
17. 17.21 × 8 =
18. 18.42 + 35 =
19. 19.8 + ? = 10
20. 20.1007 − 975 =
21. 21.17 + ? = 100
22. 22.You buy a cricket ball for ₹24 and pay with a ₹100 note. How much change do you get, in rupees?
23. 23.9 + ? = 10
24. 24.25 + 8 =
25. 25.22 children stand in rows of 5. How many full rows can they make?
26. 26.71 − 13 =
27. 27.1011 − 976 =
28. 28.You buy a notebook for ₹324 and pay with a ₹500 note. How much change do you get, in rupees?
29. 29.192 ÷ 8 =
30. 30.49 + 2 =
31. 31.85 + 18 =
32. 32.82 laddoos are packed in boxes of 8. How many laddoos are left over?
33. 33.Best estimate of 88 × 26? (a) 27000 (b) 270 (c) 2700
34. 34.549 − 99 =
35. 35.What is the remainder when 37 is divided by 4?
36. 36.Best estimate of 544 + 794? (a) 1300 (b) 1100 (c) 1500
37. 37.78 − 48 =
38. 38.41 × 7 =
39. 39.483 ÷ 7 =
40. 40.Double 97 =

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