Mental Maths for Class 3

# Mental Maths for Class 3

## Mental Maths for Class 3 with Answers

Mental Maths for class 3 covers every type of mental maths questions for class 3 students.

In this post, you will find 95 mental maths questions for grade 3 students with answers.

Mental Maths for Class 3 covers the following topics:

•        Numbers
•         Subtraction
•         Multiplication
•         Division
•         Fractions
•         Shapes
•         Measurement
•         Time
•         Money

## Mental Maths for Class 3 with Answers

1. Write the number which has 6 thousands, 2 hundreds and 5 ones. ..................

2. Write the place value of 5 in 1546. ..........................

3. Write the greatest 4-digit number. ..........................

4. The predecessor of 2459 is ......................... and its successor is ...................... .

5. Form the largest 4-digit number using the digits in each flower only once. Now, arrange these numbers in ascending and descending order.

6. The smallest 4-digit number that can be formed using 0, 3, 5 and 1 is ........... .

7. If 284 is rounded off to the nearest hundred, it becomes ......................... .

8. Write the smallest 4-digit odd number. .........................

9. If a number ends with 0, 2, 4, 6 or 8, it is called an ......................... number.

10. Pair the objects and write odd (O) or even (E).

a. Ascending order: _________________________________________

b. Descending order: ________________________________________

11. 340 + 690 is the same as ......................... .

a. 730 + 200

b. 850 + 280

c. 400 + 630

12. Which of the following gives the correct sum?

a. 999 + 0 = 998

b. 999 + 0 = 1000

c. 999 + 1 = 1000

13. The sum of the smallest 3-digit number and 99 is ...................... .

14. The sum of the greatest 2-digit number and the greatest 3-digit number is ...................... .

15. The sum of 99 and 1 is ...................... .

16. When we add the smallest 3-digit number to 0, the sum is ...................... .

17. Add: 999 + 99 + 9 = ...................... .

18. 243 + 483 is equal to ......................... .

a. 483 + 243

b. 443 + 384

c. 443 + 284

19. Which of the following is not correct?

a. 811 + 89 = 900

b. 445 + 255 = 800

c. 295 + 105 = 400

20. Add the following with correct rearrangement.

a. 12 + 135 + 88 + 265

b. 215 + 75 + 85 + 125

c. 99 + 109 + 101 + 391

d. 313 + 80 + 87 + 120

21. 658 – 608 is the same as ........................... .

a. 10 + 70

b. 28 + 22

c. 100 – 40

22. Hemant and Neha together have a total of 574 stamps. If Hemant has 319 stamps, then Neha has ........................... .

a. 259 stamps

b. 155 stamps

c. 255 stamps

23. The sum of two numbers is 892. If one of them is 475, then the other number is ................ .

24. 459 – 409 = ............ – 50

25. 5962 – ............ = 4962

26. The birth years of four of Riya’s friends are given below.

Nisha—2005

Ritu—2004

Ananya—2006

Preetha—2009

Based on this information, answer the following questions.

a. Who is the youngest in the group and who is the oldest?

..................................................................................................................................

b. How old will be Nisha and Preetha in 2023?

..................................................................................................................................

c. What is the difference between the ages of Ritu and Ananya?

.................................................................................................................................

27. Fill in the blanks.

a. 4762 – 1 = __________

b. 1932 – 1932 = _________

c. 9854 – 0 = _________

d. 4683 – 1000 = ________

28. Which of the following is correct?

a. 5782 – 2741 = 3141

b. 8291 – 3639 = 4752

c. 6214 – 4276 = 1938

29. Which of the following is incorrect?

a. 9467 – 4728 = 4739

b. 7356 – 2762 = 4694

c. 8401 – 5162 = 3239

30. Subtract the following.

a. 1000 – 465

b. 800 – 123

31. Which product from the following options is equal to 17 + 23?

a. 5 × 6

b. 8 × 5

c. 10 × 2

32. Which one of the following products lies between 70 and 80?

a. 8 × 7

b. 9 × 8

c. 7 × 10

33. Which one of the following is wrong?

a. 9 × 100 = 900

b. 20 × 200 = 400

c. 7 × 1000 = 7000

34. 3000 × 2 = (............ × ............) × 1000

35. 12 × 6 hundreds = ...................

36. Tick the product from the following options which is equal to 28 + 22.

a. 6 × 5

b. 10 × 4

c. 5 × 10

37. Tick one of the following products which lies between 55 and 60.

a. 6 × 9

b. 7 × 8

c. 9 × 8

38. There are 8 packets of 26 candles each. The total number of candles is ............ .

a. 218

b. 208

c. 228

39. 6 bags contain 25 candies each. The total number of candies is ............... .

a. 120

b. 180

c. 150

40. Megha buys 18 chocolates for her birthday party. Each chocolate costs  10. How much money did she pay for the chocolates? ........................

41. 56 ÷ 8 = _______

a. 5                b. 6                c. 7

42. Which of the following values is between 100 and 110?

a. 77 ÷ 7                b. 618 ÷ 6                c. 9918 ÷ 9

43. When 976 is divided by 10, the remainder is ______.

a. 6                b. 67                c. 9

44. When a number divided by 4 gives the quotient as 8, then the number is ______.

a. 30                b. 32                c. 2

45. 475 ÷ 1 = ______

a. 1                b. 0                c. 475

46. Manish bought 3 cans of fruit juice and drank 2 cans out of it. The fraction of fruit juice cans consumed by him is ...................... .

a. 2/5

b. 1/3

c. 2/3

47. In a mathematics test, Piya scored 8 out of 10. The fraction of marks scored by Piya is .............................. .

a. 8/10

b. 2/10

c. 2/8

48. There are 9 chocolates. Megha eats 4 of them. The fraction of chocolates eat­en by Megha is .............................. .

a. 5/9

b. 4/9

c. 9/13

49. There are 24 mangoes in a basket. Half of them are ripe. The number of ripe mangoes in the basket is .............................. .

a. 10

b. 11

c. 12

50. Half of half is .............................. .

51. One-fourth of 28 = ..............................

52. One-third of 39 = ……………………..

53. Two-thirds of 18 = ……………….

54. Out of 36 candies, one-fourth has been eaten. The number of remaining candies is ....................... .

55. Nisha had 25 marbles. She gave three-fifths of the marbles to her brother. How many marbles did she give to her brother? ………………..

56. State whether the outer surface of the following objects is flat or curved.

Flat/Curved            Flat/Curved                Flat/Curved

57. State whether the outer line of the following shapes is straight or curved.

Straight/Curved      Straight/Curved       Straight/Curved

58. What is the shape of a water bottle? _____________________

59. What is the shape of a carrot? ___________________

60. How many end points are there in a line segment? ________________

61. How many end points are there in a ray? _____________________

62. How many geometrical pieces does a tangram hold? ______________

63. If east is the opposite of west, what is the opposite of north? _____________

64. How many faces are there in a sphere? _______________

65. How many vertices are there in a cylinder? ______________

66. Which item is heavier? Write the correct answer in the space provided.

a. An eraser or half kg of potatoes: .........................................................

b. One kg of rice or a toothbrush: .........................................................

c. A cow or a dog: .........................................................

d. A table of a school bag: …………………………………….

67. Which unit would you use to weigh the following things?

a. A pencil: ...........

b. A school bag: ...........

c. A geometry box: ...........

d. A packet of flour: ...........

e. A mobile phone: ...........

f. A bike: ...........

68. Tick the object whose weight is greater than 1 kg.

a. A television

b. A pair of socks

c. A candle

d. An elephant

69. Tick the object whose weight is less than 1 kg.

a. A gas cylinder

b. A car

c. A matchbox

d. A lunchbox

70. Which unit would you use to measure the following lengths?

a. The length of a saree

b. The length of your classroom

c. The length of a pencil

d. The height of a tree

71. Fill in the blanks.

a. 1 kilogram = ........... grams

b. 3 litres = ........... mL

c. 8 kilometres = ........... metres

d. 4 kilograms = ........... grams

72. Which unit would you use to measure the capacity of the following objects?

a. A cup: ………………

b. A tank: ………………….

c. A bucket: …………...

d. A spoon: ……………….

73. If the minute hand is at 9 and the hour hand is between 4 and 5, we say that the time is ............................ .

a. quarter past 4

b. quarter to 5

c. quarter to 4

74. The adjoining clock shows ............................ .

a.     half past 9
b. 5 minutes past 9
c. 10 o’ clock
75. Which of the following clocks shows quarter past 5?
76. The day before Thursday is ……………………… .
a. Tuesday
b. Wednesday
c. Friday
77. The day after Sunday is …………………….. .
a. Saturday
b. Friday
c. Monday
78. The month that comes in between July and September is …………………. .
a. August
b. June
c. October
79. In a leap year, February has ............................ days.
a. 28
b. 29
c. 30
80. 7:50 can also be written as ............................ .
a. half past 7
b. 10 minutes to 8
c. 10 minutes past 7
81. The day that comes after Saturday is ............................ .
a. Sunday
b. Monday
c. Tuesday
82. The day that comes before Friday is ............................ .
a. Tuesday
b. Wednesday
c. Thursday
83. How many days in a week start with the letter ‘S’?
a. 3
b. 4
c. 2
84. 25 December 2020 can also be written as ............................ .
a. 25.12.2020
b. 12.25.2020
c. 12.12.2020
85. The month that comes after July is …………….. .
a. June
b. August
c. September
86. Which one of the following options add up to  15?

87. A pencil costs  5.50. The cost of 4 such pencils is
a.  20.00
b.  21.00
c.  22.00
88. 615 p can also be written as
a.  6.15
b.  615
c.  61.5
For questions 84 to 86, refer to the following pictures.

89. The pen costs .................... more than the eraser.

a.  5

b.  10

c.  15

90. The cost of 2 pencils and .................... erasers are the same.

a. 3

b. 4

c. 5

91. The cost of 3 pens and 1 eraser is ................... .

a.  40

b.  45

c.  50

92. ______  50 notes make  400.

a. 6

b. 7

c. 8

93. Tick the incorrect sentence.

a. 5 two-rupee coins make  10.

b. 4 five-rupee coins make  25.

c. 10 one-rupee coins make  10.

d. 8 five-rupee coins make  40.

94.  15 is ………………  20.

a. greater than

b. less than

c. equal to

95. Four  5 notes make ………………. .

a.  15

b.  20

c.  25

1. a. Even       b. Even

c. Odd

2. 5407         3. 300

4. 9999         5. 1458, 1460

6. 1035         7. 300

8. 1001         9. Even

10. 7440, 9980, 6421, 7641

a. 6421, 7440, 7641, 9980

b. 9980, 7641, 7440, 6421

11. c               12. C

13. 199          14. 1098

15. 100          16. 100

17. 1107        18. A

19. b

20. a. 500        b. 500

c. 700          d. 600

21. b                22. c

23. 417           24. 100

25. 1000

26. a. Youngest: Preetha; Oldest: Ritu

b. Nisha: 18 years; Preetha: 14 years

c. 2 years

27. a. 4761        b. 0

c. 9854          d. 3683

28. c                 29. b

30. a. 535        b. 677

31. b                 32. b

33. b                 34. 3, 2

35. 7200          36. c

37. b                 38. b

39. c                  40. ₹ 180

41. c                 42. b       43. a

44. b                45. c

46. c                 47. a

48. b                 49. c

50. ¼                51. 7

52. 13               53. 12

54. 27               55. 15

56. Curved, Flat, Curved

57. Straight, Curved, Straight

58. Cylinder       59. Cone

60. Two              61. One

62. Seven           63. South

64. One              65. Zero

66. a. Half kg of potatoes

b. One kg of rice

c. A cow       d. A table

67. a. Gram      b. Kilogram

c. Gram        d. Kilogram

e. Gram        f. Kilogram

68. a.           b. X

c. X           d.

69. a. X         b. X

c. √          d. √

70. a. Metre           b. Metre

c. Centimetre    d. Metre

71. a. 1000            b. 3000

c. 8000             d. 4000

72. a. mL              b. L

c. L                  d. mL

73. b                74. b

75. c                 76. b

77. c                 78. a

79. b                 80. b

81. a                  82. c

83. c                  84. a

85. b                  86. b

87. c                   88. a

89. b                   90. b

91. c                    92. c

93. b                   94. b

95. b

Worksheets for Maths

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