Decimal Computation Word Problems

Front

What is a decimal?

Back

A decimal is a way of representing numbers that are not whole numbers, using a point to separate the whole part from the fractional part. For example, 0.75 is a decimal.

Front

How do you multiply a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there are no decimals, then count the total number of decimal places in the decimal and place the decimal point in the product accordingly.

Front

What is the process to add decimals?

Back

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

Front

What is the formula to calculate total earnings?

Back

Total Earnings = Hourly Rate × Hours Worked. For example, if Anna earns $13.75 per hour and works 20 hours, her total earnings are $13.75 × 20 = $275.00.

Front

How do you calculate the cost of items per pound?

Back

To find the cost of items per pound, multiply the price per pound by the weight in pounds. For example, if grapes cost $2.40 per pound and weigh 2.3 pounds, the cost is $2.40 × 2.3 = $5.52.

Front

What is the formula to find total gallons of gas bought over weeks?

Back

Total Gallons = Gallons per Week × Number of Weeks. For example, if Ms. Canipe buys 14.4 gallons per week for 6 weeks, she buys 14.4 × 6 = 86.4 gallons.

Front

How do you find the distance left to walk?

Back

To find the distance left to walk, subtract the distance already traveled from the total distance. For example, if Katie lives 1.34 miles from school and biked 0.75 miles, she walked 1.34 - 0.75 = 0.59 miles.

Front

What is the total cost of multiple items?

Back

To find the total cost of multiple items, multiply the cost of each item by the quantity and then add the costs together. For example, 4 chairs at $27.90 each and 2 tables at $37.95 each total $187.50.

Front

What is a word problem in math?

Back

A word problem is a mathematical problem that is presented in the form of a story or real-life scenario, requiring the reader to extract the relevant information to solve it.