adding and subtracting decimals 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, 0.75 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, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

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

Front

What does 'less than' mean in a word problem?

Back

'Less than' indicates subtraction. For example, if something costs $5 less than $10, it costs $10 - $5 = $5.

Front

If it rained 0.72 inches on Monday and 0.34 inches less on Tuesday, how do you find Tuesday's rainfall?

Back

Subtract 0.34 from 0.72: 0.72 - 0.34 = 0.38 inches.

Front

What is the total weight if Tucker bought 2.78 pounds of melon and 2.27 pounds of cherries?

Back

Add the weights: 2.78 + 2.27 = 5.05 pounds.

Front

How do you calculate change from a $10 bill?

Back

Subtract the total cost from $10. For example, if the total is $5.68, then change = $10 - $5.68 = $4.32.

Front

If Larry has $3.96 left after spending $64.90, how do you find out how much he had initially?

Back

Add the amount spent to the amount left: $64.90 + $3.96 = $68.86.

Front

How do you find out how much money Steve has left after giving $78.88 to Gerald?

Back

Subtract the amount given from the initial amount: $95.61 - $78.88 = $16.73.

Front

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

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.