CBSE Class 5 Mathematics Weight Worksheet

Question 1. \(3\text{l } 200\text{ ml} - 1\text{l } 400\text{ ml}\)
(a) \(4\text{l } 600\text{ ml}\)
(b) \(1\text{l } 200\text{ ml}\)
(c) \(1\text{l } 800\text{ ml}\)
(d) \(2\text{l } 800\text{ ml}\)
Answer: (c) \(1\text{l } 800\text{ ml}\)
Convert litres to millilitres or subtract by regrouping:
\(3\text{l } 200\text{ ml} = 3200\text{ ml}\)
\(1\text{l } 400\text{ ml} = 1400\text{ ml}\)
\(3200\text{ ml} - 1400\text{ ml} = 1800\text{ ml} = 1\text{l } 800\text{ ml}\)
In simple words: Subtract the smaller quantity from the larger one after converting everything to millilitres.

Exam Tip: Remember that \(1\text{l} = 1000\text{ ml}\) when borrowing across units.

Question 2. \(7.5\text{ kg} = \_\_\_\_\_ \text{ g}\)
(a) \(75\text{ kg}\)
(b) \(750\text{ g}\)
(c) \(7500\text{ g}\)
(d) \(7000\text{ g}\)
Answer: (c) \(7500\text{ g}\)
Since \(1\text{ kg} = 1000\text{ g}\), multiply the value in kilograms by 1000:
\(7.5 \times 1000 = 7500\text{ g}\)
In simple words: To convert kilograms to grams, multiply by 1000 by shifting the decimal point three places to the right.

Exam Tip: Always check the units carefully; converting from a larger unit to a smaller unit always involves multiplication.

Question 3. What is the perimeter of a rectangle of sides 14 cm and 20 cm?
(a) 68 cm
(b) 68 sq. cm
(c) 280 cm
(d) 42 cm
Answer: (a) 68 cm
Perimeter of a rectangle = \(2 \times (\text{Length} + \text{Breadth})\)
\(= 2 \times (20\text{ cm} + 14\text{ cm})\)
\(= 2 \times 34\text{ cm} = 68\text{ cm}\)
In simple words: Perimeter is the total distance around the outside, found by adding all four sides together.

Exam Tip: Perimeter is measured in linear units (like cm), whereas area is measured in square units (like sq. cm).

Question 4. What is the area of a square with sides 12 m?
(a) 48 sq. m
(b) 144 sq. m
(c) 144 m
(d) 48 m
Answer: (b) 144 sq. m
Area of a square = \(\text{Side} \times \text{Side}\)
\(= 12\text{ m} \times 12\text{ m} = 144\text{ sq. m}\)
In simple words: Multiply the side length by itself to find the total surface space inside the square.

Exam Tip: Do not confuse area with perimeter; area uses multiplication and square units.

Question 5. A bottle of sauce weighs 400 g. What will be the weight of 10 such bottles?
(a) 40000 g
(b) 4 kg
(c) 40 kg
(d) 4000 kg
Answer: (b) 4 kg
Weight of 1 bottle = 400 g
Weight of 10 bottles = \(400\text{ g} \times 10 = 4000\text{ g}\)
Convert grams to kilograms: \(4000\text{ g} = 4000 \div 1000 = 4\text{ kg}\)
In simple words: Multiply the weight of one bottle by 10, then convert grams to kilograms.

Exam Tip: Always read the options carefully, as multiple-choice questions often list intermediate values like 4000 g which may not be the only correct format if 4 kg is also provided.

Question 6. A bunch of 12 bananas weighs 660 g. How much does each banana weigh?
(a) 648 g
(b) 55 g
(c) 55 kg
(d) 792 g
Answer: (b) 55 g
Weight of 12 bananas = 660 g
Weight of 1 banana = \(660\text{ g} \div 12\)
\(660 \div 12 = 55\text{ g}\)
In simple words: Divide the total weight by the total number of items to find the weight of a single item.

Exam Tip: Division is used when finding the value or weight of a single unit from a given total.

Question 7. A bottle of juice had \(1\text{l } 500\text{ ml}\) in it. If 700 ml is still left in the bottle, how much was used?
(a) \(1\text{ l } 100\text{ ml}\)
(b) \(1\text{ l } 200\text{ ml}\)
(c) 800 ml
(d) 80 ml
Answer: (c) 800 ml
Initial quantity = \(1\text{l } 500\text{ ml} = 1500\text{ ml}\)
Quantity left = 700 ml
Quantity used = \(1500\text{ ml} - 700\text{ ml} = 800\text{ ml}\)
In simple words: Subtract the remaining amount from the total starting amount to find out how much was consumed.

Exam Tip: Convert mixed units into a single smaller unit before performing subtraction to avoid calculation mistakes.

Question 8. \((6\text{ cm} - 6\text{ mm})\)
(a) 5.4 cm
(b) 6.94 cm
(c) 5.94 cm
(d) 5.04 cm
Answer: (a) 5.4 cm
Convert 6 mm into cm: \(6\text{ mm} = 0.6\text{ cm}\)
Subtract from 6 cm:
\(6\text{ cm} - 0.6\text{ cm} = 5.4\text{ cm}\)
In simple words: Convert both measurements to the same unit (centimetres) before subtracting.

Exam Tip: Remember that \(10\text{ mm} = 1\text{ cm}\), so \(1\text{ mm} = 0.1\text{ cm}\).

Question 9. \(550\text{ m} + 550\text{ m}\)
(a) 1 km
(b) 1.11 km
(c) 1.1 km
(d) 10.1 km
Answer: (c) 1.1 km
Add the distances in metres:
\(550\text{ m} + 550\text{ m} = 1100\text{ m}\)
Convert metres to kilometres by dividing by 1000:
\(1100\text{ m} = 1100 \div 1000 = 1.1\text{ km}\)
In simple words: First add the metres together, then convert the result into kilometres.

Exam Tip: \(1\text{ km} = 1000\text{ m}\), so any value of 1000 metres or more has a decimal or fractional kilometre part.