Transcript Multiplication Problems

Multiplication Problems
To go to the museum it costs $34 per
student. Five D has 29 students.
The class has raised $675 already, how
much more money do they need to go to
the Museum?
3
4 x 9 = 36
34
9 x 3 = 27 +3 = 30
x 29
2x4=8
3 0 6
2x3=6
+
6 8 0
9 8 6
The perimeter of the shelter shed is
27m, Mr D makes his class run around
it 38 times. Three of them faint and six
of them sprain an ankle or break a leg.
The girls run twice as fast as the boys.
There are 19 students who finish the
run. How far do they run?
Understanding the problem.
What information don’t we need?
The perimeter of the shelter shed is
27m, Mr D makes his class run around
it 38 times. Three of them faint and six
of them sprain an ankle or break a leg.
The girls run twice as fast as the boys.
There are 19 students who finish the
run. How far do they run?
Understanding the problem.
What is the question asking us?
The perimeter of the shelter shed is
27m, Mr D makes his class run around
it 38 times.
How far do they run?
What will our answer look like?
Our answer will be a number of metres.
Plan how to solve the problem
What strategy will we use?
Solving an equation.
Plan how to solve the problem
What operation will we use?
Multiplication
2 5
8 x 7 = 56
27
8 x 2 = 16 +5 = 21
x 38
3 x 7 = 21
2 1 6
3x2=6+2=8
+
8 1 0
1 0 2 6
Looking Back
Is our answer reasonable?
Yes
Plan how to solve the problem
Write your answer as a sentence.
Each student in Mr D’s class will run
1026 metres when they run around the
shed.
Sarah has a new bike, every time the
wheel spins around the bike goes
forward 48cm. She rides to the shops
then to her friends house. Her friend
lives 6 blocks away from her home. On
the way home she counts the number of
times the wheel spins in one block. She
counted 84 spins. How long is the
block?
Understanding the problem.
What information don’t we need?
Sarah has a new bike, every time the
wheel spins around the bike goes
forward 48cm. She rides to the shops
then to her friends house. Her friend
lives 6 blocks away from her home. On
the way home she counts the number of
times the wheel spins in one block. She
counted 84 spins. How long is the
block?
Understanding the problem.
What is the question asking us?
Sarah has a new bike, every time the wheel spins around the
bike goes forward 48cm. On the way home she counts the
number of times the wheel spins in one block. She counted
84 spins.
How long is the block?
What will our answer look like?
Our answer will be a number of centimetres.
Plan how to solve the problem
What strategy will we use?
Solving an equation.
Plan how to solve the problem
What operation will we use?
Multiplication
4 x 8 = 32
4 x 4= 16 + 3 = 19
8 x 8 = 64
8 x 4 = 32 + 6 = 38
6 3
48
x 84
1 9 2
+ 38 4 0
4 0 3 2
Looking Back
Is our answer reasonable?
Yes
Plan how to solve the problem
Write your answer as a sentence.
A block is 4032 cm or 40.32 metres.