Decimal Word Problems

Front

What is a decimal?

Back

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.

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

What is the process to divide a decimal by a whole number?

Back

To divide a decimal by a whole number, divide as you would with whole numbers. Place the decimal point in the quotient directly above the decimal point in the dividend.

Front

How do you multiply decimals?

Back

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

Front

What is the importance of estimating in decimal word problems?

Back

Estimating helps to quickly determine if an answer is reasonable and can guide the solving process.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the relationship between decimals and percentages?

Back

Decimals and percentages are two ways of expressing the same value. To convert a decimal to a percentage, multiply by 100 and add a percent sign.

Front

If a book takes up 0.4 feet of space, how do you find out how many books fit in 3.2 feet?

Back

Divide the total space (3.2 feet) by the space each book takes (0.4 feet). 3.2 ÷ 0.4 = 8 books.

Front

How do you find the unit rate from a word problem?

Back

To find the unit rate, divide the total quantity by the number of units. For example, if a car travels 125.6 miles on 5.2 gallons, divide 125.6 by 5.2.

Front

What is the formula to find out how many containers are needed to fill a larger container?

Back

Divide the total capacity of the larger container by the capacity of one smaller container.