Date:
H A PTE
R
C
Name:
8
Mass
PROBLEM SOLVING
Thinking Skills
1.
The picture shows David's and Janet's mass four years ago.
David has added 5 kilograms of mass.
Janet has added 7 kilograms of mass.
Who is heavier now?
kg
kg
How much heavier?
90
0
80
70
60
50
90
10
20
80
30
70
10
20
30
60
40
0
50
40
David
is
66
kilograms heavier than
Janet
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Solve.
Show your work.
.
Chapter 8 Mass
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Name:
2.
Date:
Look at the pictures.
Order the boxes from lightest to heaviest.
A
C
B
B
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C
A
Box
, Box
, Box
lightest
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Name:
3.
Date:
Look at the picture.
Each
is 50 grams.
Each carrot has the same mass.
Find the mass of 4 carrots.
0
900 g 100
800
200
500
300
400
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700
600
The mass of 4 carrots is
68
grams.
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Date:
PROBLEM SOLVING
Strategies
Solve.
Show your work.
4.
Each watermelon has the same mass.
Find the total mass of 2 watermelons.
14
0
kg
2
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12
10
4
8
6
The total mass of 2 watermelons is
kilograms.
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Name:
Each
has a mass of 20 grams.
The books all have the same mass.
Find the mass of the toy car.
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5.
Date:
The mass of the toy car is
70
grams.
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Name:
6.
Date:
The mass of a metal cupboard is
Find the mass of the cupboard.
+
+
= 35 kilograms
+
= 30 kilograms
+
=
+
The mass of the metal cupboard is
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7.
+
+
.
kilograms.
The total mass of two blocks of wood is 650 grams.
One block is 250 grams lighter than the other block.
Find the mass of each block of wood.
650 g
250 g
One block of wood has a mass of
The other block of wood has a mass of
grams.
grams.
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Name:
The mass of each
is 2 kilograms.
Find the mass of the fish bowl.
?
The mass of the fish bowl is
72
kilograms.
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8.
Date:
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Date:
PROBLEM SOLVING
Exploration
Solve.
Show your work.
9.
450
grams
100
grams
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50 grams
?
550
grams
650
grams
750
grams
500
grams
150
grams
250
grams
1,000
grams
Which three bags will balance the 1,000 gram mass on the right?
List all possible answers.
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Name:
10.
Date:
Luke has four coins.
One coin is heavier than the other coins.
He uses a balance to find out which coin it is.
Draw the coins on the balances to show how Luke finds the answer.
Step 1
Luke should balance two
coins on each side first.
74
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Step 2
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Date:
Journal Writing
Solve and explain.
11.
Explain how you know which item is heavier.
How much heavier is the item?
2 kg 2 kg
Item A
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12.
2 kg 2 kg
3 kg 3 kg
Item B
Write a real-world problem for the bar model.
56 kg
Luke
Janice
148 kg
17 kg
Terry
?
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