ACT Prep Math - Mixed

Front

What is the formula to calculate the total number of combinations when choosing one item from multiple categories?

Back

The total number of combinations is calculated by multiplying the number of choices in each category. For example, if there are 3 types of sandwiches, 4 types of chips, and 5 types of drinks, the total combinations are 3 * 4 * 5 = 60.

Front

How do you calculate the discounted price of an item?

Back

To calculate the discounted price, multiply the original price by the discount percentage (as a decimal) and subtract that amount from the original price. For example, for jeans priced at $48 with a discount of 1/3, the price is $48 - (48 * 2/3) = $16.

Front

What is 40% of a number?

Back

To find 40% of a number, multiply the number by 0.40. For example, 40% of $12.50 is 12.50 * 0.40 = $5.

Front

What is the formula for the area of a parallelogram?

Back

The area of a parallelogram is calculated using the formula A = bh, where 'b' is the base and 'h' is the height.

Front

How do you find the median of a set of numbers?

Back

To find the median, first arrange the numbers in ascending order. If there is an odd number of observations, the median is the middle number. If there is an even number, it is the average of the two middle numbers.

Front

What is the relationship between percentages and fractions?

Back

Front

What does it mean for two expressions to be equivalent?

Back

Front

How do you calculate the total cost of multiple items with different prices?

Back

To calculate the total cost, add the prices of all items together. For example, if jeans cost $16 and a belt costs $5, the total cost is $16 + $5 = $21.

Front

What is the significance of the median in a data set?

Back

The median is a measure of central tendency that represents the middle value of a data set, providing a better representation of the data when there are outliers.

Front

How do you express a percentage as a decimal?

Back

To express a percentage as a decimal, divide the percentage by 100. For example, 25% as a decimal is 0.25.