Adding and Subtracting Decimal Word Problems Steps: 1. Read word problem carefully. 2. Locate the important information. 3. Decide whether you add or subtract. 4. Write your math problem. 5. Solve.
Problem #1 Ms. Tulips bought $56.12 worth of groceries. However, she had coupons worth $9.85. How much did Ms. Tulip spend for the groceries?
Problem #2 Matt bought a skateboard for $67.50 and a pair of kneepads for $9.75. If the sales tax was $4.64, how much did he spend altogether?
Problem #3 A U.S. penny weighs 0.1 oz. The smallest hummingbird on record was 2.24 inches long and weighed 0.056 oz. How much less than a penny did the hummingbird weigh?
Problem #4 A beef sandwich has two slices of bread with a layer of meat between them. Each slice of bread is 1.4 cm thick, and the meat is 0.5 cm thick. How thick is the sandwich?
Problem #5 You buy a CD for $12.99. You pay with a $20 bill. How much change should you get back?