MCA Review #1

Front

What is the formula to calculate the number of items per hour?

Back

To find the number of items washed per hour, divide the total number of items by the total hours spent. Formula: \( \text{Items per hour} = \frac{\text{Total items}}{\text{Total hours}} \)

Front

What does it mean when one number is greater than another in a number sentence?

Back

A number is greater than another if it is to the right on the number line. For example, 0.007 is greater than 0.006.

Front

How do you find the cost of a single item from a total cost?

Back

To find the cost of a single item, divide the total cost by the number of items. Formula: \( \text{Cost per item} = \frac{\text{Total cost}}{\text{Number of items}} \)

Front

What is 10% of a number?

Back

To find 10% of a number, multiply the number by 0.10. For example, 10% of 50 is \( 50 \times 0.10 = 5 \).

Front

How do you convert an improper fraction to a mixed number?

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder is the new numerator.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction. For example, \( 2 \frac{1}{2} \) is a mixed number.

Front

What is the relationship between fractions and division?

Back

Fractions represent division. For example, \( \frac{a}{b} \) means 'a divided by b'.

Front

How do you compare decimal numbers?

Back

To compare decimal numbers, align the decimal points and compare digit by digit from left to right.

Front

What is the process to find a percentage of a number?

Back

To find a percentage of a number, convert the percentage to a decimal and multiply it by the number. For example, to find 20% of 50, calculate \( 50 \times 0.20 = 10 \).

Front

What is the significance of the denominator in a fraction?

Back

The denominator indicates how many equal parts the whole is divided into. For example, in \( \frac{3}{4} \), the denominator 4 means the whole is divided into 4 parts.