Rational Numbers Check Point 2.3

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

How do you divide a whole number by a fraction?

Back

To divide a whole number by a fraction, multiply the whole number by the reciprocal of the fraction.

Front

What is the reciprocal of a fraction?

Back

The reciprocal of a fraction is obtained by flipping the numerator and denominator.

Front

If you have 21 feet and want to cut it into pieces of 3/8 feet, which operation do you use?

Back

You use division: 21 ÷ (3/8).

Front

How do you find out how many people can eat a certain amount of pizza if each person eats a fraction of it?

Back

Divide the total amount of pizza by the amount each person eats.

Front

What is the result of subtracting a negative number from a positive number?

Back

Subtracting a negative number is the same as adding its absolute value.

Front

How do you calculate total expenses when a fixed amount is deducted monthly?

Back

Multiply the monthly deduction by the number of months.

Front

What is the formula to calculate the cost based on mileage?

Back

Cost = Rate per mile × Number of miles driven.

Front

How do you convert pounds to hamburgers if each hamburger weighs a fraction of a pound?

Back

Divide the total weight in pounds by the weight of one hamburger.

Front

What is the importance of understanding fractions in real-life applications?

Back

Fractions help in understanding parts of a whole, which is essential in cooking, budgeting, and measuring.