Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 214 · 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. 1.84 + ? = 100
2. 2.31 children stand in rows of 3. How many full rows can they make?
3. 3.Best estimate of 776 + 466? (a) 1500 (b) 1100 (c) 1300
4. 4.85 + ? = 100
5. 5.30 × 4 =
6. 6.231 ÷ 3 =
7. 7.26 + 8 =
8. 8.A train leaves at 2:25 and reaches the next city at 4:10. How many minutes is the journey?
9. 9.19 + 9 =
10. 10.Best estimate of 66 × 39? (a) 280 (b) 28000 (c) 2800
11. 11.13 − 9 =
12. 12.29² =
13. 13.Double 51 =
14. 14.Best estimate of 229 + 596? (a) 800 (b) 600 (c) 1000
15. 15.29 + 2 =
16. 16.You buy a pencil box for ₹11 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.544 ÷ 8 =
18. 18.You buy a water bottle for ₹25 and a pen for ₹33. You pay with a ₹100 note. How much change do you get, in rupees?
19. 19.10% of ₹800 =
20. 20.1016 − 985 =
21. 21.Best estimate of 83 × 79? (a) 64000 (b) 6400 (c) 640
22. 22.738 ÷ 9 =
23. 23.50% of ₹870 =
24. 24.119 − 83 =
25. 25.62 + ? = 100
26. 26.530 − 475 =
27. 27.A train leaves at 5:55 and reaches the next city at 9:05. How many minutes is the journey?
28. 28.15² =
29. 29.102 − 29 =
30. 30.You buy a notebook for ₹78 and pay with a ₹100 note. How much change do you get, in rupees?
31. 31.320 ÷ 8 =
32. 32.206 − 176 =
33. 33.7 + ? = 10
34. 34.You start your homework at 5:45 and finish at 7:05. How many minutes did you work?
35. 35.424 ÷ 8 =
36. 36.You buy a box of crayons for ₹31 and a pen for ₹45. You pay with a ₹100 note. How much change do you get, in rupees?
37. 37.What is the remainder when 103 is divided by 7?
38. 38.88 − 9 =
39. 39.What is the remainder when 30 is divided by 7?
40. 40.52 − 48 =

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