CBA 3 Review

CBA 3 Review

Study and Review, while you stay home and stay warm!

Topics Covered

• Identify measurements in the customary and metric systems

• Equivalent Fractions

• Addition and Subtraction of Fractions

• Decomposing Fractions

• Comparing Fractions

• Input/Output Tables

Input/Output Tables

Let's refresh over the oldest first. These tables organize input/output data according to a given rule. Example X10.

Sample Question

What is our Rule? Look at the position and find what we are doing to get each value. Are we multiplying, dividing, adding, or subtracting? If we look at one value we could do two things. To get from 1 to 11 we could add 10 or multiply by 11. We must look at more to determine the rule.

Multiple Choice

What do you think the rule for the last slide is?

• + 10

• X 11

• -10

Multiple Choice

What is our rule?

• + 14

• X 15

• X 8

• +1

Multiple Choice

Given the table, what would the output be if the input was 7?

• 272

• 257

• 752

• 250

Converting Fractions to Decimals and Back

When you say the name of some fraction it should remind you of decimals. For example 4/10 can also be written as 0.4 , Or 15/100 can also be written as 0.15 .

Multiple Choice

Which of the following fractions is the same as 0.45?

• 4/5

• 45/10

• 45/100

Multiple Choice

Which of the following is thae same as 2/100?

• 0.2

• 0.20

• 0.02

Comparing Fractions

The best way to compare fractions is to cross multiply. Remember our symbols Greater Than >, Less Than <, and Equal To =.

Sample Question

In our example, we first multiply 5 X 10, giving us 50 on the left. Then we multiply 8 X 6, giving us 48 on the right. 50 is more than 48. So, we use the greater than symbol. Remember the alligator wants the largest number for lunch!

Multiple Choice

Compare the 2 Fractions. Which symbol would we use to compare them?

• <

• >

• =

Multiple Choice

Which is correct?

• Greater Than

• Less Than

• Equal To

Multiple Choice

Which is correct?

• Less Than

• Equal To

• Greater Than

Decomposing Fractions

To decompose is to break apart. So when we decompose a fraction we break it into its parts. There are multiply ways to break down fractions.

Sample Question

When we see this, we must first understand that each strip is 1 whole. Meaning you make your fractions using how many shaded in the 1st strip, over the total amount in that strip.So, 4/5 and 5/5, not 9/10.

Multiple Choice

What would NOT be a way to represent the shaded part?

Multiple Choice

Which one can represent the shaded portion?

Adding and Subtracting Fractions

The rule when adding and subtracting fractions with the same denominator is to add/subtract the top but leave the bottom.

Sample Question

Add the numerators but just bring the denominator over.

Multiple Choice

Using that information, what is the correct answer?

• 2/4

• 2/8

• 1/2

• 1/8

• Both 2/4 and 1/2

Sample Question

Add the numerators but just bring the denominator over. Then also remember to simplify.

Simplifying Fractions

Sometimes when you find an answer it could be simplified into a smaller fraction. Just like 100/200, the numerator is half the value of the denominator so it can be simplified to 1/2. Not all are that simple.

Simplifying Fractions

Copy and Paste the following into the search bar of a new tab, or go to canvas and watch the simplifying review video.

https://youtu.be/AtBUQH8Tkqc

Simplifying Fractions

You must find the largest common factor to simplify!

Multiple Choice

What is there greatest common factor?

• 24

• 36

• 12

• 1

Multiple Choice

What does 24/36 simplify to?

• 2/4

• 2/3

• 1/2

Multiple Choice

What does 14/6 simplify to? Hint it is a mixed number.

• 1/2

• 2 and 1/3

• 3/4

• 1 and 1/3

Equivalent Fractions

Equivalent means equal. When you cross multiply to compare you will get the = symbol.

Sample Question

What you do to the numerator (top) you do to the denominator (bottom). So, whatever you do to the denominator you do to the numerator. Meaning if I have to multiply by 7 to find the new denominator, then you must multiply the numerator by 7 as well.

Multiple Choice

What is the missing numerator?

• 7

• 42

Multiple Choice

What is the missing numerator?

• 2

• 3

Multiple Choice

What is the missing denominator?

• 80

• 10

Multiple Choice

Which fraction is equivalent to 1 whole?

• 2/4

• 4/4

• 99/99

• Both 4/4 and 99/99

Multiple Choice

What is another way for me to write 2 and 3/9

• 21/9

• 6/9

Identifying Metric and Customary (English) Measuring Systems

Customary or English Measurements

What we use in the U.S.

Length

Inches, Feet, Yards, Miles

Capacity or Volume

Fluid Ounces, Cups, Pints, Quarts, Gallons

Weight

Ounces, Pounds, Tons

Multiple Choice

What would you most likely use to measure a football field?

• Inches

• Feet

• Yards

• Pounds

• Gallons

Multiple Choice

What would you use to measure the weight of a mouse?

• Pounds

• Ounces

• Tons

• Pints

Multiple Choice

Which of these is the English Units for Measure for Length?

• Cups, Pints, Quarts, Gallons

• Inches, Feet, Yards, Miles

• Millimeter, Centimeter, Meter, Kilometer

• Milliliter, Liter, Kiloliter

Multiple Choice

Which of these is the English Units for Measure for Capacity (Volume)?

• Cups, Pints, Quarts, Gallons

• Inches, Feet, Yards, Miles

• Millimeter, Centimeter, Meter, Kilometer

• Milliliter, Liter, Kiloliter

Multiple Choice

Which of these is the English Units for Measure for Weight?

• Cups, Pints, Quarts, Gallons

• Ounces, Pounds, Tons

• Milligrams, Grams, Kilograms

• Milliliter, Liter, Kiloliter

Conversions

2 cups = 1 Pint

2 Pints = 1 Quart

4 Quarts = 1 Gallon

Multiple Choice

How much ice cream do I have in Gallons if I have 2 Gallons 3 Quarts + 1 Gallon 2 Quarts? Convert all you can to gallons.

• 3 Gallons 5 Quarts

• 4 Gallons 1 Quart

• 4 Gallons

Conversions

12 Inches = 1 Foot

3 Feet = 1 Yard

1,760 Yards = 1 Mile

Multiple Choice

If Sally had 60 feet of yarn, how many yards is that?

• 30

• 20

• 100

• 52

Metric System Measurements

Length

Millimeter, Centimeter, Meter, Kilometer

Capacity or Volume

Milliliter, Liter, Kiloliter

Weight

Milligrams, Grams, Kilograms

Multiple Choice

Which measurement would you use to weigh a mouse?

• Grams

• Kilograms

• Liter

Multiple Choice

Which would you use to measure a trip from here to New York?

• Yards

• Kilometers

• Millimeters

Multiple Choice

Which of these is a metric unit for length?

• Miles

• Feet

• Meters

Multiple Choice

Which of these is the metric unit for capacity?

• Liters

• Pounds

• Quarts

More Review

Go back and finish any Education Galaxies over these topics that you have not already gotten 3 stars on.