Decimal Word Problems

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.

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.

0.75 is equivalent to 75/100, which simplifies to 3/4.

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.

The total cost is $9.89 x 7.4 = $73.26.

Subtract the distance biked from the total distance: 1.34 - 0.75 = 0.59 miles.

Add the two amounts: 3.5 + 4.25 = 7.75 dozen.

Subtract the length cut from the original length: 18.93 - 2.09 = 16.84 inches.

First, find the total earned: 15.25 + 10.50 + 13.30 = 39.05. Then subtract from the goal: 60 - 39.05 = 20.95.

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