Decimal Operations with Negatives & Word Problems

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would with whole numbers, placing the decimal point in the answer directly below the other decimal points.

Front

What does it mean to have a negative number?

Back

A negative number is a number that is less than zero, often used to represent a loss or a debt.

Front

How do you add a negative number to a positive number?

Back

When adding a negative number to a positive number, you subtract the absolute value of the negative number from the positive number.

Front

What is the total cost if you buy 3 items priced at $2.50 each?

Back

$7.50 (3 x $2.50 = $7.50).

Front

If you have $50 and spend $12.75, how much do you have left?

Back

$37.25 ($50 - $12.75 = $37.25).

Front

What is the formula to find the average?

Back

The average is found by adding all the numbers together and then dividing by the count of the numbers.

Front

How do you divide a decimal by a whole number?

Back

To divide a decimal by a whole number, divide as you would with whole numbers, and place the decimal point in the quotient directly above the decimal point in the dividend.

Front

What is the result of 0.5 + 0.25?

Back

0.75 (0.5 + 0.25 = 0.75).

Front

If a bag of candy costs $1.50, how much do 5 bags cost?

Back

$7.50 (5 x $1.50 = $7.50).