adding and subtracting decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part.

Front

How do you add decimals?

Back

To add decimals, line up the decimal points and add each column starting from the right.

Front

What is the value of the digit 5 in the number 3.45?

Back

In the number 3.45, the digit 5 is in the hundredths place, so its value is 0.05.

Front

What is the sum of 1.2 and 2.3?

Back

1.2 + 2.3 = 3.5.

Front

How do you subtract decimals?

Back

To subtract decimals, line up the decimal points and subtract each column starting from the right.

Front

What is the difference between 5.5 and 2.2?

Back

5.5 - 2.2 = 3.3.

Front

When adding 0.75 and 0.25, what is the result?

Back

0.75 + 0.25 = 1.00.

Front

What does it mean to 'line up the decimals'?

Back

'Line up the decimals' means to ensure that the decimal points of the numbers being added or subtracted are in the same vertical column.

Front

If you have $10.50 and spend $3.75, how much do you have left?

Back

$10.50 - $3.75 = $6.75.

Front

What is the total cost of 3 items priced at $4.25 each?

Back

3 x $4.25 = $12.75.