Revisa lo aprendido sobre repeated addition y rectangular arrangement problems

1. Let’s
translate
word
problems!

2. Till now you know 2 types of multiplication word problems.
Remember:
Repeated addition problems are problems in which a number
is repeated many times.
Example of a repeated addition problem:
Caroline has a pack of chocolate cookies. In each pack there
are 4 cookies. How many cookies are in 5 packs?
Mmm ok. Let’s analyze the
problem

3. Imagine the situation:
1 pack =
Caroline has 5 packs:
+ + + +
Caroline has 5 times 4 cookies or 5x4 that makes 20. She has 20 cookies and we solve
the problem using a repeated addition.

4. Rectangular arrangement problems are problem in which we
form an array to solve them.
Example of a rectangular arrangement problem:
Today we are going to dinner in an Italian restaurant. There are 5
types of sauces and 4 types of pasta to choose. How many
combinations of pasta and sauces do we can choose to eat?

5. Oh I got it. I have to
combine each row with
each column.
Imagine the situation:
We have 5 sauces and 4 pasta options.
p
a
s
t
a
sauces

6. Cool!
Yes, you are right. To know how many combinations are possible
you need to join pasta and sauces making an array. So, to solve
the problem you can multiply 5 rows and 4 columns, 5 times 4=
20. 20 combinations are possible.

7. Hey, now you are ready to
translate and solve some
problems.

8. Solve on the board:
a. Daniel’s mom makes cupcakes. She uses 2 shapes of
cupcakes and 13 flavors. How many different cupcakes
combinations could she make?
b. Anne has 5 boxes. In 1 box there are 6 dolls. How many dolls
does she have in all?
c.There are 37 rows and 42 columns of chairs in a soccer
stadium. How many chairs are in all?

9. d. A tree has 8 branches. If in 1 branch are 12 leaves, how many
leaves are in all the branches?
e. Kyle and Liam want to buy some beach clothes. They find in a
clothes shop 6 different swimsuits and 5 different towels. How
many possible clothes combinations would they choose?
F. I went to the beach with my family last weekend and we ate
delicious fried fish. 1 fried fish costs 32,000 pesos. If my father
bought 7 fried fish for us, how much money did he spend in all?

10. Yay! We have solve all the
problems!

11. REP
A repeated addition problem involves or can be expressed as a
repeated addition.
A rectangular arrangement problem involves or can be expressed as
an array.