Measuring Mass - Worksheet | Maths Year 2 - Free Printable

Problem Analysis:

The worksheet provided involves two main tasks:
1. Comparing the masses of objects and identifying which one has the greater mass.
2. Choosing the appropriate unit of measurement (grams or kilograms) for different objects.

Let’s solve each part step by step.

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Task 1: Compare the objects below and circle the one with the greater mass.

#### a) Elephant vs. Mouse
- An elephant is a large animal, typically weighing several tons.
- A mouse is a small animal, typically weighing a few grams.
- Greater mass: Elephant

#### b) Ladybug vs. Bird
- A ladybug is very small and lightweight, typically weighing a few milligrams.
- A bird, even a small one, is significantly heavier than a ladybug.
- Greater mass: Bird

#### c) Red Brick vs. Lego Block
- A red brick is made of dense material and is larger in size compared to a Lego block.
- A Lego block is smaller and made of plastic, which is less dense.
- Greater mass: Red Brick

#### d) Balloon vs. Football
- A balloon filled with air is very light, as air has minimal mass.
- A football is made of leather and filled with air, but it is still much heavier than an empty balloon.
- Greater mass: Football

#### e) Orange Juice Bottle vs. Water Bottle
- Both bottles appear to be similar in size and shape.
- However, orange juice is denser than water due to its sugar content.
- Greater mass: Orange Juice Bottle

#### f) Jar of Beans vs. Jar of Candy
- The jar of beans appears to be filled with solid, dense beans.
- The jar of candy appears to be filled with lighter, less dense candies.
- Greater mass: Jar of Beans

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Task 2: Circle the unit of measurement you would use to measure the mass of the objects below.

#### a) Elephant
- Elephants are extremely heavy animals, typically weighing thousands of kilograms.
- Unit: kg

#### b) Mouse
- Mice are very light animals, typically weighing a few grams.
- Unit: g

#### c) Person
- Humans have a moderate weight, typically ranging from 50 to 100 kilograms.
- Unit: kg

#### d) Apple
- Apples are relatively light fruits, typically weighing around 100 to 200 grams.
- Unit: g

#### e) Cheese Slice
- A slice of cheese is very light, typically weighing a few grams.
- Unit: g

#### f) Suitcase
- A suitcase can hold various items and is generally quite heavy, often weighing tens of kilograms.
- Unit: kg

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Final Answers:

#### Task 1: Greater Mass
- a) Elephant
- b) Bird
- c) Red Brick
- d) Football
- e) Orange Juice Bottle
- f) Jar of Beans

#### Task 2: Unit of Measurement
- a) kg
- b) g
- c) kg
- d) g
- e) g
- f) kg

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Boxed Final Answer:

\[
\boxed{
\text{Task 1: a) Elephant, b) Bird, c) Red Brick, d) Football, e) Orange Juice Bottle, f) Jar of Beans}
}
\]
\[
\boxed{
\text{Task 2: a) kg, b) g, c) kg, d) g, e) g, f) kg}
}
\]