Rates, Ratios, Percentages

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you calculate a percentage?

Back

To calculate a percentage, divide the part by the whole and then multiply by 100. For example, to find 15% of 60, calculate (15/100) * 60 = 9.

Front

What is the formula for finding the total number of items when given a percentage?

Back

Total = (Part / Percentage) * 100. For example, if 9 markers are not working and that is 15%, then Total = (9 / 15) * 100 = 60.

Front

How do you convert feet to inches?

Back

To convert feet to inches, multiply the number of feet by 12. For example, 5 feet = 5 * 12 = 60 inches.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or cost per item.

Front

How do you find the cost of one item when given the total cost and quantity?

Back

To find the cost of one item, divide the total cost by the number of items. For example, if 3 pieces of pizza cost $4.50, then cost per piece = $4.50 / 3 = $1.50.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions. For example, a ratio of 2:3 can be written as the fraction 2/3.

Front

How do you solve a problem using a ratio table?

Back

To solve a problem using a ratio table, list the quantities in a table format, showing equivalent ratios until you reach the desired amount.

Front

What is the meaning of 'not working' in a percentage context?

Back

'Not working' refers to the portion of a total that is defective or unusable, often expressed as a percentage of the total.

Front

How do you find the missing number in a sequence?

Back

To find the missing number in a sequence, identify the pattern or rule that governs the sequence and apply it to find the unknown.