ACC Unit 2 Review

Front

What is a ratio?

Back

A ratio is a relationship between two numbers that shows how many times the first number contains the second. It can be expressed in different forms, such as 'a to b' or a:b.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD). For example, the ratio 8:12 can be simplified to 2:3 by dividing both terms by 4.

Front

What is the formula to find the cost per pound?

Back

To find the cost per pound, divide the total cost by the total weight in pounds. For example, if a 3-pound bag costs $5.94, the cost per pound is $5.94 ÷ 3 = $1.98.

Front

How do you convert yards to feet?

Back

To convert yards to feet, multiply the number of yards by 3, since there are 3 feet in 1 yard. For example, 13 yards is 13 × 3 = 39 feet.

Front

What is the percentage formula?

Back

The percentage formula is: (Part/Whole) × 100 = Percentage. For example, if 34% of a number is 51, you can find the whole number by rearranging the formula.

Front

What does it mean to find a percentage of a number?

Back

Finding a percentage of a number means calculating how much that percentage represents in terms of the whole number. For example, 34% of 150 is 51.

Front

How do you find the total number of items from a ratio?

Back

To find the total number of items from a ratio, add the parts of the ratio together and then use that sum to find the total. For example, in a ratio of 1:4, the total is 1 + 4 = 5 parts.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per one unit of another quantity, such as miles per hour.

Front

How do you calculate the total from a given percentage?

Back

To calculate the total from a given percentage, divide the part by the percentage (in decimal form). For example, if 51 is 34%, the total is 51 ÷ 0.34 = 150.

Front

What is the relationship between fractions and ratios?

Back

Fractions and ratios both represent a relationship between two quantities. A ratio can be expressed as a fraction, where the first quantity is the numerator and the second is the denominator.