# Signed Numbers Word Problems Worksheets

How Do You Spot Negative Values in Word Problems? Rarely you get to see negative values in a word problem; however, how can you identify them if they are present? To solve this dilemma, let's consider an example and solve them accordingly. 12-year old Jake wanted to buy candy from a local store. However, he didn’t have money, so he bought candy on loan from the kind shopkeeper worth \$3. The next day he wanted to buy more candies from the shopkeeper and told him that he will the coming day. So, he bought candies and soda worth \$8 and left. The next day, he came by with \$15 and asked the shopkeeper, "how much loan he has to pay?" In this scenario, Jake has \$15; however, he already has a debt of \$3 and then \$8 that he has to payback. So, first of all, he’s bill is already -\$11. Now, he’ll pay around \$15, so that he can get a return of -\$11 + \$15 = \$4. There are other examples that also can help in resolving negative word problems.

• ### Basic Lesson

Example: If you put two boards that are 2 inches thick on top of each other, how thick is the double board? Two boards are 2 inches thick on the top.

• ### Intermediate Lesson

Explores how to approach complex Signed Numbers Word Problems. A proton has a charge of positive one. An electron has a charge of negative one. Find the total charge of an ion with 12 protons and 10 electrons.

• ### Independent Practice 1

Example: A milkman purchased 25 liters of milk and sold it at 4 places as 4 liters, 6 liters, 3 liters, and 7 liters respectively. How much milk remains? The answers can be found below.

• ### Independent Practice 2

Example: Teddy borrows \$800. She repays the in installments for 6 months. For the 1st, 2nd & 3rd month she paid \$45, \$146 & \$34. How much he has paid?

• ### Homework Worksheet

The status of Molly’s account was -\$5. She wrote a check for \$18.00. The bank charged her a \$13.00 fee for being overdrawn. What was the new status of Molly’s account?

• ### Topic Quiz

If you put two boards 11 inches thick on top of each other, how thick is the double board? A math scoring matrix is included.

• ### Homework and Quiz Answer Key

Answers for the homework and quiz.

• ### Lesson and Practice Answer Key

Answers for both lessons and both practice sheets.

#### Name the Mathematician

This mathematician is known for a calculus rule named after him and for finding the limit of a rational function whose numerator and denominator tend to zero at a point. Who is he? Guillame de L'Hopital.