Grade 8 Math Flashcard

Front

A recipe requires 2 cups of sugar for every 5 cups of flour. What is the ratio of sugar to flour?

Back

2:5

Front

A student scored 45 out of 60 on a test. What percentage is this?

Back

75%

Front

What is the ratio of 12 to 16 in simplest form?

Back

3:4

Front

What is 25% of 160?

Back

40

Front

A pump fills a 1000-liter tank in 20 minutes. What is the rate of water flow in liters per minute?

Back

50 L/min

Front

Define ratio in mathematics.

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

What is the formula to calculate percentage?

Back

Percentage = (Part/Whole) * 100

Front

How do you simplify a ratio?

Back

Divide both terms of the ratio by their greatest common divisor (GCD).

Front

What is the relationship between fractions and percentages?

Back

A percentage is a fraction with a denominator of 100.

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100 and add a percent sign.