#### Solved Examples and Worksheet for Estimating Metric Units

Q1Choose the best estimation for the capacity of a water jug.

A. 200 mL
B. 2,000 L
C. 2 mL
D. 2 L

Step: 1
200 mL, 2 mL are very small estimates for the amount of water fillied in the water jug.
Step: 2
2,000 L is too big for the estimate for the amount of water filled in the water jug.
Step: 3
Approximately 2 L of water can be filled in the water jug shown.
Step: 4
So, the best estimate for the amount of water filled in the water jug is 2 L.
Correct Answer is :   2 L
Q2What is the best estimate of the capacity of a water can?

A. 1 liter
B. 10 liters
C. 50 liters
D. 2 liters

Step: 1
1 liter is too small to measure the capacity of a water can.
Step: 2
50 liters, 10 liters are too big to measure the capacity of a water can.
Step: 3
So, the best estimate of the capacity of a water can is 2 liters.
Correct Answer is :   2 liters
Q3Which of the following is the best estimate for the weight of the camera?

A. heavier than 1 kilogram
C. lighter than 1 kilogram

Step: 1
The weight of the camera can be lighter than 1 kilogram.
Step: 2
So, the best estimate for the weight of the camera is lighter than 1 kilogram.
Correct Answer is :   lighter than 1 kilogram
Q4Which of these is the best estimate for the capacity of the bottle shown?

A. less than 1 liter
C. more than 1 liter

Step: 1
The bottle can hold about 1 liter.
Step: 2
So, the estimate for the capacity of the bottle shown is about 1 liter.
Q5Choose the object that holds about 1 litre.

A. Figure 3
B. Figure 1
C. Figure 2

Step: 1
The objects in Figure 2 and Figure 3 cannot hold 1 litre.
Step: 2
The object in Figure 1 can hold less than 1 litre.
Step: 3
So, among the given objects, the object in Figure 1 can hold about 1 litre.
Correct Answer is :   Figure 1
Q6Which of the following can hold about 50 litres of water?
A. a tablespoon
B. a cup
C. a water jug
D. a tank

Step: 1
A cup and a tablespoon cannot hold 50 litres of water. They are too small to hold 50 litres of water.
Step: 2
A water jug can hold a maximum of 5 litres of water.
Step: 3
Usually people store plenty of water in tanks. So, a tank can hold 50 litres of water.
Correct Answer is :   a tank
Q7Which of the following is the best estimate for the weight of a papaya?

A. 2 kilograms
B. 10 kilograms
C. 100 kilograms
D. 10 gram

Step: 1
100 kilograms and 10 kilograms are too big to measure the weight of a papaya.
Step: 2
10 grams is too small to measure the weight of a papaya.
Step: 3
A papaya can weigh about 2 kilograms.
Step: 4
So, the estimated weight of a papaya is 2 kilograms.
Correct Answer is :   2 kilograms
Q8What is the best estimate of the weight of the potato?

A. 5 g
B. 1 g
C. 7 g
D. 75 g

Step: 1
Weight of the potato shown cannot be 1 g, or 5 g, or 7 g. It can be around 75 g.
Step: 2
So, the best estimate for the weight of the potato shown is 75 g.
Correct Answer is :   75 g
Q9What is the best estimate for the weight of the syringe?

A. 5 kg
B. 1 kg
C. 25 g
D. 100 kg

Step: 1
The given object is a syringe.
Step: 2
Weight of a syringe cannot be 1 kg or 5 kg or 100 kg, it can be around 25 g.
Step: 3
So, the correct estimate for the weight of the given object is 25 g.
Correct Answer is :   25 g
Q10What is the best estimate for the weight of the pen?

A. 50 g
B. 5 kg
C. 2 kg
D. 50 kg

Step: 1
The given object is a pen.
Step: 2
Weight of the pen cannot be 2 kg, or 5 kg, or 50 kg. It can be around 50 g.
Step: 3
So, the best estimate for the weight of the pen shown is 50 g.
Correct Answer is :   50 g