20.4: Solve Problems Using Measurements

20.4: Solve Problems Using Measurements

Students will use my understanding of the relative sizes of measurement units to solve problems involving metric units and customary units of measure.

I can...

I can use my understanding of the relative sizes of measurement units to solve problems involving metric units and customary units of measure.

Let's break down this problem:

Jaxson has 14 gallons of paint to paint the outside of a house. He uses 16 quarts of the paint for the windows. How many quarts of paint does he have left for painting the rest of the house?

Multiple Choice

Step 1: One gallon = ___ Quarts

• 1

• 2

• 3

• 4

Fill in the Blanks

How many quarts are in 14 gallons?

Multiple Choice

Jaxson uses 16 quarts of the paint for the windows. Which equation models the amount of paint that is left?

• 16 – 14 = 2

• 56 – 16 = 40

• 14 + 16 = 30

• 56 – 14 = 42

Let's break down this problem

Jessica needs 3 quarters cups of oil to make banana bread. She has 1 half​ pint. How much oil will Jessica have left after she makes the banana bread?

Fill in the Blanks

1 pint =

cups

Fill in the Blanks

2/2=

, or 1/2 of a pint is _ cup(s)

Before we continue, let's review fractions.

You learned this in 3rd grade but I want us to review it.

What is a numerator? What is a denominator?

The numerator is the number above the line of a fraction, showing the number of parts of the whole.

What is a denominator?

The denominator is the bottom number in a fraction showing the number of parts the whole is divided into.

To add fractions there are Three Simple Steps:

• Step 1: Make sure the bottom numbers (the denominators) are the same

• Step 2: Add the top numbers (the numerators), put that answer over the denominator

• Step 3: Simplify the fraction (if needed)

There are 3 simple steps to subtract fractions

• Step 1. Make sure the bottom numbers (the denominators) are the same

• Step 2. Subtract the top numbers (the numerators). Put the answer over the same denominator.

• Step 3. Simplify the fraction (if needed).

What are equivalent fractions?

Equivalent fractions are fractions with different numbers representing the same part of a whole. They have different numerators and denominators, but their fractional values are the same. For example, think about the fraction 1/2. It means half of something. You can also say that 6/12 is half, and that 50/100 is half.

When you are typing fractions, it's hard to put the numbers on top of each other.

When writing fractions, write it as numerator/denominator

Multiple Choice

Remember, Jessica has 1/2 pints of oil. How any cups of oil does Jessica have?

Multiple Choice

Jessica only needs 3/4 cups of oil but she has 4/4 cups. What does the equation 4/4 - 3/4 = 1/4 tell us

• Jessica's banana bread recipe uses 1/4 ​​cup of oil.

• Jessica needs another 1/4 ​​cup of oil to make the banana bread.

• Jessica can make the banana bread and will have 1/4 ​​cup of oil left over.

• Jessica can make only 1/4 the amount of banana bread she planned to make.

Last problem

The map shows the distance from Dina’s home to her school and from her home to her favorite store. If Dina walks from her home to and from school, and from her home to and from her favorite store, how far does she walk?

To find out how many kilometers Dina walks to and from school, multiply 3/10 by 2, or add 3/10 plus 3/10.

Fill in the Blanks

Now you try: If it is a distance of 1/10 km to Dina's favorite store from her house and 1/10 km from Dina's favorite store to her house, how far is that walk in total?

Multiple Choice

If it takes Dina 6/10 km to walk to and from school and 2/10 km to walk to and from her favorite store, how far does she walk in total?

• 4/10 kilometers

• 5/10 kilometers

• 6/10 kilometers

• 8/10 kilometers