Adding and Subtracting Decimal Word Problems

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. For example, 3.14 is a decimal.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, borrowing if necessary.

Front

What is the value of 0.5 + 0.9?

Back

0.5 + 0.9 = 1.4.

Front

What is the value of 2.75 + 1.6?

Back

2.75 + 1.6 = 4.35.

Front

If you have $16.73 and spend $4.12, how do you find out how much you have left?

Back

Subtract the amount spent from the total: $16.73 - $4.12 = $12.61.

Front

What is the total distance if you walk 1.75 km and then 3.2 km?

Back

1.75 km + 3.2 km = 4.95 km.

Front

How do you convert hours into decimals?

Back

To convert hours into decimals, you can express minutes as a fraction of an hour. For example, 30 minutes is 0.5 hours.

Front

What is the total time spent if you take 0.45 hours and 0.75 hours?

Back

0.45 hours + 0.75 hours = 1.2 hours.

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

Aligning decimal points ensures that you are adding or subtracting the correct place values.