Rational Number Operations

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 convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the decimal equivalent of the fraction 4/10?

Back

.4

Front

How do you calculate the total cost of multiple items?

Back

Multiply the price of one item by the number of items purchased.

Front

If Anusha buys 4 pairs of socks for $2.25 each and a belt for $7.50, how do you find her total expenditure?

Back

Total expenditure = (4 * 2.25) + 7.50 = $9.00.

Front

How do you find the change from a purchase?

Back

Change = Amount given - Total cost.

Front

If Anusha pays with a $20 bill, how much change does she receive after spending $16.50?

Back

Change = 20 - 16.50 = $3.50.

Front

What is the sum of 1.70 and 4.65?

Back

1.70 + 4.65 = 6.35.

Front

How do you divide a decimal by a whole number?

Back

Move the decimal point in the dividend to the right as many places as needed to make it a whole number, then divide.

Front

Back