Solving Problems with Ratios

What week of Remote Learning are we finishing up today?

• 3

• 4

• 5

• 6

Tags

CCSS.7.EE.B.3

CCSS.4.OA.A.3

CCSS.3.OA.D.8

Which of the following is NOT a tip your teacher suggested to help you solve word problems?

• Be prepared to read the problem more than once

• Just write a number answer

• Show your work and a clear final answer

• Ensure your final answer has the right units

Which of the following is NOT a way to write ratios?

• using words

• using a colon ---> : <----

• in a fraction

• with a subtraction sign

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.1

A proportion is when....

• two ratios are set to be equal

• one ratio is bigger than the other

• the ratio cannot be solved

• we find the unit price

Tags

CCSS.7.RP.A.2A

How can we identify the unknown in a proportion? (Check all the right answers)

• using a variable, like x or y

• putting a box in the place of the unknown

• putting a question mark in place of the unknown

• putting the number 10 to hold the place

Tags

CCSS.7.RP.A.2C

Solve the proportion: If there are 10 students in one class, there would be _________ students in 5 classes.

• 5

• 50

• 10

• 55

Tags

CCSS.7.RP.A.2A

Solve the proportion, a car that drives 100km / hour, will travel _________ km in 3 hours.

• 3

• 100

• 150

• 300

Tags

CCSS.7.RP.A.2B

Allison can bake 4 cakes in one day.  How many days would it take to bake 24 cakes?

Which of the following proportions can be used to solve this problem?

• $\frac{4}{x}=\ \frac{24}{1}$

• $\frac{4}{1}=\frac{24}{x}$

• $\frac{4}{24}=\ \frac{x}{y}$

• $\frac{4}{6}=\ 24-4$

Tags

CCSS.7.RP.A.2A

Once a proportion is set up, the first step is to.....
(Here is an example:

 $\frac{x}{4}=\ \frac{12}{24}$  )

• multiply on the diagonal

• multiply the numbers in the second fraction

• divide each number, one by one

• add on the diagonal

Tags

CCSS.7.RP.A.3

After multiplying on the diagonal, the next step is to:
(use this example for reference:

 $\frac{x}{4}\ =\ \frac{12}{\ 24}$  

• divide by 12

• divide by 24

• subtract 24

• subtract 4

Tags

CCSS.5.NF.B.6