Worksheet–2.09.1
Topic: Mass
Name _____________________________
Date ___________________
1. Choose the best answer.
(i) Which is the most reasonable measure for the weight of a tennis ball?
a. 2 ounces
b. 2 pounds
c. 2 tons
(ii) Which is the most reasonable measure for the weight of a freight train?
a. 2000 ounces
b. 2000 pounds
c. 2000 tons
(iii)
Which unit would you use to measure the weight of a bag of flour?
a. ounces
b. pounds
c. tons
(iv) Which unit would you use to measure the weight of an eraser?
a. grams
b. kilograms
(v) Which unit would you use to measure the weight of a mug?
a. grams
b. kilograms
(vi)
Which unit would you use to measure the weight of a baby?
a. grams
b. kilograms
(vii) Which unit would you use to measure the weight of a pencil case?
a. grams
b. kilograms
2. Choose the best answer.
(i) Which is the most reasonable measure for the weight of a tennis ball?
a. 58.5 grams
b. 5.85 kilograms
c. 58.5 kilograms
(ii) Which is the most reasonable measure for the weight of a new born baby?
a. 2000 grams
b. 20 kilograms
c. 200 grams
(iii) Which is the most reasonable measure for the weight of a coin?
a. 6 kilograms
b. 60 kilograms
c. 6 grams
(iv) Which is the most reasonable measure for the weight of a can of soup?
a. 14 grams
b. 140 grams
c. 14 kilograms
(v).
Which is the most reasonable measure for the weight of a pencil case?
a. 80 kilograms
b. 8 kilograms
c. 80 grams
(vi). Which is the most reasonable measure for the weight of a cat?
a. 4 kilograms
b. 40 grams
c. 4 grams
3. You have been chosen as one of the first passengers to travel to Mars.
‘Space Technology’ will let you take only 1kg of luggage.
What things can you pack in your backpack to take with you that will weigh 1kg or
less.
Worksheet–2.09.2
Topic: Mass
Name _____________________________
1. Convert the following.
(i)
3 kg =
______ g
(ii)
5 kg = ______________ g
(iii)
9 kg =
_______ g
(iv)
12 kg =
_______ g
(v)
45 kg =
_______ g
(vi)
96 kg =
______ g
(vii)
18 kg 500 g =
___________ g
(viii)
8 kg 750 g =
___________ g
(ix)
2 kg 535 g =
___________ g
(x)
10 kg 980 g =
__________ g
Date ___________________
Worksheet–2.09.3
Topic: Mass
Name _____________________________
1. Solve the following.
(i)
14 g + 55 g =
Date ___________________
__ __ _g
(ii)
53g + 21 g =
_____ g
(iii)
5 005 g – 2 100 g =
____g
(iv)
3 500 kg – 976 kg =
______kg
(v)
1 829 kg + 354 kg =
_________ kg
2. Calculate and answer in compound units (kg and g) if possible.
(i)
6 kg 300 g + 300 g =
(ii)
2 kg 720 g - 380 g =
(iii)
2 kg 200 g - 500 g =
(iv)
1kg500g- 650g =
(v)
2 kg 500 g - 950 g =
(vi)
1,540 g + 670 g =
(vii)
6 kg 500 g + 500 g =
(viii)
4kg 200g- 750g=
(ix)
3 kg 625 g + 150 g =
3. Farwa bought 3 tins of beans from the shop. They each with the mass 418g. The mass of
bag in which she put the tins is 5 grams. What is the mass of the bag afterwards?
4. A pack of strawberries weighing 226g and 2 jars of coffee, each having mass 480g, are
put on the scale.
Draw an arrow to show the mass of the 3 items.
Worksheet–2.09.4
Topic: Mass
Name _____________________________
Date ___________________
1. Use <, > or = to complete the statements below:
(i)
750g
1 kg 300 g
(ii)
500g
half a kilogram
(iii)
1700g
112g + 1kg
(iv)
2kg
3400g – 1400g
(v)
650g + 350g ____________1kg
(vi)
100g + 250g + 150g __________450 kg
(vii)
1000kg – 250 kg ___________750 kg
2. Ali’s mass is 51kg. He is 5 kg 500 g heavier than his sister. What is the mass of his sister?
Give your answer in grams.
3. A glue stick with mass 57 grams and a stapler with mass 126 grams heavier than the
glue stick. What is the mass of a stapler?
4. Atif purchased 7 kg 200 g of sugar, 9 kg 395 g of rice. What is the total mass
which Atif carried?
5. The mass of a Math book is 400 grams. The mass of a dictionary is 1 kg 800 g. Are
four Mathbooks heavier than a dictionary?
6. A bag of wheat with mass 25 kg and a bag of tea with mass 2 kg. What will be the
total mass of 5 bags of wheat and 3 bags of tea?
Worksheet–2.09.5
Topic: Mass
Name _____________________________
Date ___________________
Part 1: Measuring Mass
Identify the Unit:
Match the object with the correct unit of mass: grams (g) or kilograms (kg).
Object
Unit (g or kg)
A rock sample
A sack of soil
A jar of water
A small mineral stone
A wooden log
Measuring Activity:
Imagine you have the following items:
o
o
o
A bag of rice weighing 4 kg
A fossil weighing 3 kg
A bottle of oil weighing 750 g
Answer the following.
a) Which item is the heaviest?
b) Which item is the lightest?
Part 2: Conversion of Units
Convert Kilograms to Grams:
Use the formula: 1 kg = 1000 g to solve the following:
a) 5 kg of soil = _______ g
b) 2 kg of rocks = _______ g
c) 10 kg of water = _______ g
Fill in the Blanks:
a) A wooden log weighs 6 kg. Its weight in grams is ________.
b) A mineral stone weighs 3500 g. Its weight in kilograms is ________.
Part 3: Addition and Subtraction of Mass
a) A bag of soil weighs 3 kg, and a bottle of water weighs 2 kg. What is their total mass?
b) A rock weighs 4 kg, and another rock weighs 1 kg 500 g. What is the combined mass of the
rocks?
c) A fossil weighs 8 kg, and you break off a piece weighing 3 kg. How much is left?
d) A sack of soil weighs 10 kg, but 2 kg is used for planting. What is the remaining mass?
Part 4: Real-Life Situations
Solve the Problems:
a) A farmer has 15 kg of soil and needs to divide it equally into 3 bags. What is the mass of soil
in each bag in grams?
b) A geologist finds 2 kg of rocks in one location and 3kg 500 g in another location. Later, they
lose 1 kg 200 g during transportation. How much mass do they have left?
c) A fossil collector has a rock sample weighing 10 kg. After cleaning it, they remove 1 kg 500 g
of dirt. They then find another fossil weighing 4 kg. What is the total mass of the fossils and
rocks now?
Part 5: Connection with Earth’s Resources
Natural Resources and Their Mass:
Look at the table of Earth’s natural resources. Fill in the blanks with appropriate mass units (g or
kg).
Resource
Estimated Mass
A small fossil
3 _______
A jar of oil
1 _______ 500 _____
A piece of wood 5 _______
A bucket of water 10 _______
A mineral rock
800 _______
Explore and Discover:
Imagine you find a fossil weighing 6 kg. If it takes 2 kg of soil to bury it properly and you add
another 3 kg of rocks on top, what is the total weight of the arrangement in kilograms and
grams?