CBSE Class 4 Maths How Heavy How Light Worksheet Set 01

Ques. 1. The weight of each shape is given below. Find the total weight of given combination. One is done for you.
Answer:
I. Circle (3g) + Star (4g) + Triangle (2g) + Triangle (2g) + Cylinder (5g) = Rectangle (1g)
Wait, looking at combination I: \(3\text{g} + 4\text{g} + 2\text{g} + 2\text{g} + 5\text{g} = 16\text{g}\)
II. Triangle (2g) + Square (1g) + Circle (3g) + Cylinder (5g) + Star (4g) = \(2 + 1 + 3 + 5 + 4 = 15\text{g}\)
In simple words: Add the individual gram weights of all shapes shown in each row to find the total weight.
Exam Tip: Always double-check the weight assigned to each shape before adding them together.

Ques. 2. If weight of a square is same as the weight of two circles. Weight of a triangle is same as the weight of the circle. Balance the following scales.
Answer:
I. Triangle (\(1\) circle) + Square (\(2\) circles) + Square (\(2\) circles) = \(1 + 2 + 2 = 5\) circles.
II. Three squares and two circles: Square = \(2\) circles, so \(3\) squares = \(6\) circles, plus \(2\) more circles = \(8\) circles total, which equals \(8\) triangles since each triangle equals one circle. Wait, looking at part II scale, it asks for triangles to balance \(8\) circles: \(8\) triangles.
In simple words: Substitute each shape with its equivalent number of circles or triangles based on the given rules.

Exam Tip: Remember the conversion rules carefully: 1 square = 2 circles, and 1 triangle = 1 circle.

Ques. 3. Let us complete the bubbles.
Answer:
A.) \(300\text{ g} + 700\text{ g} = 1\text{ kg}\) (since \(1\text{ kg} = 1000\text{ g}\))
B.) \(640\text{ g} + 360\text{ g} = 1000\text{ g}\)
In simple words: Find the missing amount needed to reach \(1000\text{ g}\) (or \(1\text{ kg}\)).

Exam Tip: Always remember that \(1\text{ kg}\) is equal to \(1000\text{ g}\) when solving weight addition problems.

Ques. 4. Which pan of the balance will go down? Show by drawing an arrow. One is done for you.
Answer:
A.) Pan 1 weight = \(5\text{ kg}\), Pan 2 weight = \(4\text{ kg } 900\text{ g}\). Since \(5\text{ kg} > 4\text{ kg } 900\text{ g}\), Pan 1 will go down.
B.) Pan 1 weight = \(7\text{ kg } 400\text{ g}\), Pan 2 weight = \(7.5\text{ kg}\) (or \(7\text{ kg } 500\text{ g}\)). Since \(7.5\text{ kg} > 7\text{ kg } 400\text{ g}\), Pan 2 will go down.
In simple words: The heavier pan always goes down. Compare the total weights on both pans.

Exam Tip: Convert kilograms and grams into the same unit (all grams or all kilograms) to compare accurately.

Ques. 5. Colour the leaf that show the value of underlined weight in the trunk of the tree.
Answer:
A.) Trunk value = \(15\text{ kg}\). Correct leaf is \(14.5\text{ kg} + 500\text{ g}\) (since \(14.5\text{ kg} + 0.5\text{ kg} = 15\text{ kg}\)).
B.) Trunk value = \(1000\text{ g}\) (or \(1\text{ kg}\)). Correct leaf is \(900\text{ g} + 100\text{ g}\).
In simple words: Calculate the total weight on each leaf to see which one matches the number written on the tree trunk.

Exam Tip: Check decimal addition carefully, such as \(14.5\text{ kg} + 0.5\text{ kg} = 15\text{ kg}\).

Ques. 6. Complete the tower as shown in the example.
Answer:
A.) Bottom row: \(4\text{ kg}\), \(700\text{ g}\), \(6\text{ kg}\).
Middle row: \(4\text{ kg} + 700\text{ g} = 4.7\text{ kg}\) (or \(4\text{ kg } 700\text{ g}\)) and \(700\text{ g} + 6\text{ kg} = 6.7\text{ kg}\).
Top box = \(4.7\text{ kg} + 6.7\text{ kg} = 11.4\text{ kg}\).
B.) Bottom row: \(9\text{ kg}\), \(2\text{ kg}\), \(4\text{ kg}\).
Middle row: \(9\text{ kg} + 2\text{ kg} = 11\text{ kg}\) and \(2\text{ kg} + 4\text{ kg} = 6\text{ kg}\).
Top box = \(11\text{ kg} + 6\text{ kg} = 17\text{ kg}\).
In simple words: Add two adjacent blocks in the lower row to get the value of the block directly above them.

Exam Tip: In number and weight pyramids, each upper block is the sum of the two blocks supporting it from below.

Ques. 7. Arrange the weight in ascending order.
Answer:
1. \(750\text{ g}, 7\text{ kg}, 850\text{ g}, 6\text{ kg}\)
Converting all to grams: \(750\text{ g}, 7000\text{ g}, 850\text{ g}, 6000\text{ g}\).
Ascending order: \(750\text{ g}, 850\text{ g}, 6\text{ kg}, 7\text{ kg}\).
2. \(25\text{ g}, 25\text{ kg}, 2.5\text{ g}, 2.5\text{ kg}\)
Ascending order: \(2.5\text{ g}, 25\text{ g}, 2.5\text{ kg}, 25\text{ kg}\).
In simple words: Ascending order means arranging numbers from the smallest value to the largest value.

Exam Tip: Always convert all quantities to the same unit (grams or kilograms) before comparing and ordering them.

Ques. 8. Look at the weight of these balls. Now, write the weight of the given objects by adding the weight of the balls on the scale. The first one is done for you.
Answer:
Given: Red ball = \(100\text{ g}\), Blue ball = \(1\text{ kg}\).
First scale (with 3 red balls and a bag of flour):
\(100\text{ g} + 100\text{ g} + 100\text{ g} = 300\text{ g}\)
Second scale (with 2 blue balls and 1 red ball):
\(1\text{ kg} + 1\text{ kg} + 100\text{ g} = 2\text{ kg } 100\text{ g}\)
In simple words: Add the weights of all balls placed on the weighing scale to find the total weight of the object.

Ques. 9. Choose the right unit.
Answer:
1. Coke can: Liter
2. Bowl of cherries: Kilograms (or grams)
3. Road / Path: Kilometer
4. Cloth roll: Meter
5. Milk packet: Liter
In simple words: Choose the appropriate standard unit of measurement based on the size and quantity of the item.
Exam Tip: Use liters for liquids, meters/kilometers for lengths, and grams/kilograms for weights.

Ques. 10. Paste 5 pictures each of the things that we buy in kilogram find in grams.
Answer:
Items bought in kilograms: Rice, Wheat, Sugar, Potatoes, Onions.
Items bought in grams: Spices (Cardamom, Cloves), Cashews, Almonds, Tea powder, Saffron.
In simple words: Heavy grocery items are measured in kilograms, while lighter, expensive items are measured in grams.

Exam Tip: Real-life examples help reinforce understanding of standard measurement units.

CBSE Class 4 Maths Chapter 12 Revision Worksheets-How Heavy How Light