Flashcard: Decimal Word Problems

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, and it is represented with a decimal point.

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

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

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Total Cost = Unit Price x Quantity.

To convert a decimal to a fraction, write the decimal over its place value (e.g., 0.75 = 75/100), and simplify if possible.

Rounding decimals is important for simplifying numbers to make calculations easier and for presenting data in a more understandable way.

To find the difference, subtract the smaller decimal from the larger decimal.

A word problem is a mathematical problem that is presented in the form of a narrative or real-life scenario, requiring interpretation and problem-solving.

To determine the total amount spent, add the cost of each item together.