CBSE Class 3 Mathematics Question Paper Set 18 with Solutions

Answer: (b) \(\dfrac{4}{7}\). Four is the top number and seventh means 7 equal parts at the bottom.

Teacher's Note:
1. The top number says how many parts we take and the bottom number says how many equal parts the whole has.
2. Do not write it upside down.

Answer: (a) 5. The numerator is the top number of a fraction.

Teacher's Note:
1. Numerator is the number on top and denominator is the number below.
2. Remember: the top is the Number of parts taken.

Answer: (c) 4. A square has 4 sides and all of them are equal.

Teacher's Note:
1. Count the sides of the square one by one.
2. A rectangle has equal edges only in opposite pairs, but a square has all four equal.

Answer: (b) Sphere. The Earth is round like a ball.

Teacher's Note:
1. A sphere is a round solid shape like a ball.
2. A cylinder is like a tin can.

Answer: (c) 28. February is the shortest month and has 28 days in a normal year.

Teacher's Note:
1. Use your knuckles to remember which months have 31 days.
2. In a leap year February has 29 days.

Answer: (c) Minutes. The long hand is the minute hand.

Teacher's Note:
1. The short hand shows hours and the long hand shows minutes.
2. Do not mix up the two hands.

Answer: (a) 20 minutes. It moved 4 big steps and each step is 5 minutes, so 4 × 5 = 20.

Teacher's Note:
1. Each number on the clock is 5 minutes apart.
2. Count the steps from 2 to 6 and then multiply by 5.

Answer: (b) 4. ₹1 = 100p, so ₹2 = 200p and 200 ÷ 50 = 4.

Teacher's Note:
1. Change rupees into paise first.
2. Two 50p coins make ₹1, so ₹2 needs double.

Answer: (c) ₹2642.50. Two thousand six hundred forty two = 2642 and fifty paise = .50.

Teacher's Note:
1. Write the rupees before the dot and the paise after the dot.
2. Check each place value, especially the zeros.

Answer: (c) 500. 250 + 250 = 500.

Teacher's Note:
1. Add the same number twice, that is double it.
2. Double 25 tens is 50 tens, which is 500.

Answer: 1. Multiply the top and bottom by 2: \(\dfrac{5\times2}{6\times2}=\dfrac{10}{12}\).
2. Multiply the top and bottom by 3: \(\dfrac{5\times3}{6\times3}=\dfrac{15}{18}\).
Equivalent fractions: \(\dfrac{10}{12}\) and \(\dfrac{15}{18}\)

Teacher's Note:
1. Multiply the top and the bottom by the same number to get an equal fraction.
2. Never multiply only one of them.

Answer: 1. 1 hour = 60 minutes, so 2 hours = 2 × 60 = 120 minutes.
2. 120 + 30 = 150.
2 hours 30 minutes = 150 minutes

Teacher's Note:
1. Change the hours into minutes first and then add the extra minutes.
2. Remember 1 hour has 60 minutes, not 100.

Answer: 1. 4:30 + 20 minutes = 4:50.
2. 4:50 + 20 minutes = 5:10 (4:50 + 10 minutes = 5:00, and 10 minutes more).
3. 5:10 + 20 minutes = 5:30.
4:30, 4:50, 5:10, 5:30

Teacher's Note:
1. Add 20 minutes each time and move to the next hour when the minutes cross 60.
2. Check by counting on a clock face.

Answer: 1. 100p = ₹1, so divide 2005 by 100.
2. 2005 ÷ 100 = 20 rupees and 5 paise.
2005p = ₹20.05

Teacher's Note:
1. The last two digits are the paise and the rest are rupees.
2. Write 5p as .05 and not .5.

Answer: 1. 2000 + 200 + 30 + 2 = ₹2232.
2. Add 50p, which is ₹0.50.
Total = ₹2232.50

Teacher's Note:
1. Add the rupees together first and then put the paise after the dot.
2. Keep the dot lined up under the dot.

Answer: 1. All the fractions have the same bottom number 3, so compare the top numbers: 2, 1, 2, 4, 1.
2. Ascending order means smallest to biggest: 1, 1, 2, 2, 4.
\(\dfrac{1}{3},\ \dfrac{1}{3},\ \dfrac{2}{3},\ \dfrac{2}{3},\ \dfrac{4}{3}\)

Teacher's Note:
1. When the bottom numbers are the same, the bigger top number means the bigger fraction.
2. Ascending means going up from the smallest.

Answer: 1. Toffees left = 10 − 6 = 4.
2. Fraction left = toffees left out of the total toffees.
\(\dfrac{4}{10}\) of the toffees are left (this is also \(\dfrac{2}{5}\)).

Teacher's Note:
1. Find how many are left first and then write it over the total.
2. The total number of toffees is the bottom number.

Answer: 1. June = 30 days and July = 31 days.
2. 3 weeks = 3 × 7 = 21 days.
3. Total = 30 + 31 + 21 + 4 = 86.
86 days

Teacher's Note:
1. Learn the number of days in each month and 7 days in a week.
2. Convert every part to days before adding.

Answer: 1. Write the numbers under each other with the dots in a line:
229.70
117.53
+ 75.50
2. Add the paise: 70 + 53 + 50 = 173p = ₹1.73. Write 73 and carry 1 rupee.
3. Add the rupees: 229 + 117 + 75 + 1 = 422.
Total = ₹422.73

Teacher's Note:
1. Always line up the dots and add from the right.
2. Carry to the rupees when the paise cross 100.

Answer: 1. Sum = 115.25 + 26.30 = ₹141.55.
2. Subtract: 244.50 − 141.55 = ₹102.95.
Answer = ₹102.95

Teacher's Note:
1. First find the sum and then subtract it from the bigger amount.
2. Borrow carefully when paise are smaller.

Answer: 1. Divide 45 into 3 equal parts: 45 ÷ 3 = 15 birds in each part.
2. Parrots are 2 parts: 2 × 15 = 30.
3. Other birds = 45 − 30 = 15.
Parrots = 30 and other birds = 15

Teacher's Note:
1. To find a fraction of a number, divide by the bottom number and then multiply by the top number.
2. Check that parrots and other birds add up to 45.

Answer: 1. Time for 36 sums = 36 × 5 = 180 minutes.
2. 60 minutes = 1 hour, so 180 ÷ 60 = 3.
It will take 3 hours.

Teacher's Note:
1. Multiply to find the total minutes and then divide by 60 to get hours.
2. Read the question again to give the answer in hours.

Answer: 1. Money left = 755.80 − 255.68.
2. Paise: 80 − 68 = 12p. Rupees: 755 − 255 = 500.
₹500.12 is left with Kiran.

Teacher's Note:
1. Spent means we subtract.
2. Check your answer by adding: 500.12 + 255.68 = 755.80.

Answer: 375 km, read from row 1 of the table.

Teacher's Note:
1. Find the row with Punjab and Delhi and read the distance column.
2. Write the unit km.

Answer: 550 − 225 = ₹325

Teacher's Note:
1. Difference means subtract the smaller from the bigger.
2. Write the ₹ sign in the answer.

Answer: 375 − 235 = 140 km

Teacher's Note:
1. Take the two distances from the table and subtract.
2. Check by adding 235 + 140 = 375.

Answer: Fare for one person = ₹225, so for 5 people: 5 × 225 = ₹1125

Teacher's Note:
1. Fare is for one person, so multiply by the number of people.
2. 225 × 5 = 200 × 5 + 25 × 5 = 1000 + 125.

Answer: Jaipur to Delhi = 235 km and Delhi to Katra = 631 km. Total = 235 + 631 = 866 km

Teacher's Note:
1. Jaipur to Delhi is the same distance as Delhi to Jaipur.
2. Add the two distances together.