End of Year 7th Grade Math Trivia

Front

What is percent decrease?

Back

Percent decrease is a measure of how much a quantity has decreased in relation to its original value, expressed as a percentage. It is calculated using the formula: ((original value - new value) / original value) * 100.

Front

How do you calculate the selling price after a markup?

Back

To calculate the selling price after a markup, use the formula: Selling Price = Cost Price + (Cost Price * Markup Percentage). For example, if the cost price is $147 and the markup is 60%, the selling price is $147 + ($147 * 0.60) = $235.20.

Front

How do you order negative numbers from least to greatest?

Back

To order negative numbers from least to greatest, remember that the number with the largest absolute value is the smallest. For example, -85 is less than -61, -40, and -21.

Front

What is 75% less than a quantity?

Back

To find 75% less than a quantity, multiply the quantity by 0.75 and subtract that from the original quantity. For example, if a bottle holds 12 fluid ounces, 75% less is 12 - (12 * 0.75) = 3 fluid ounces.

Front

How do you convert a scale measurement to actual distance?

Back

To convert a scale measurement to actual distance, use the ratio provided by the scale. For example, if 2.5 cm represents 15 km, then 17.5 cm represents (17.5 cm / 2.5 cm) * 15 km = 105 km.

Front

What is the formula for calculating percent change?

Back

The formula for calculating percent change is: ((new value - original value) / original value) * 100.

Front

What does it mean to mark up a price?

Back

Marking up a price means increasing the original cost of an item by a certain percentage to determine the selling price.

Front

How do you find the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -5 is 5.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying the fraction by 100. For example, 1/4 = 0.25, which is 25%.

Front

How do you calculate the total cost after tax?

Back

To calculate the total cost after tax, multiply the original price by the tax rate and add that to the original price. For example, if an item costs $100 and the tax rate is 5%, the total cost is $100 + ($100 * 0.05) = $105.