Adding and Subtracting Rational Numbers

Adding and Subtracting Rational Numbers

Read each question carefully and show all your work. Simplify all answers to their lowest terms.

1. Calculate the sum: \(\frac{3}{5} + \frac{1}{4}\)

2. Find the sum: \(2\frac{1}{3} + 1\frac{1}{2}\)

3. Subtract: \(\frac{7}{8} - \frac{1}{3}\)

4. Calculate the difference: \(3\frac{2}{5} - 1\frac{3}{10}\)

5. What is the value of \(-5.6 + 2.3\)?

6. Evaluate: \(12.75 - (-4.2)\)

7. To add or subtract fractions, you must first find a  .

8. When subtracting a negative number, it is equivalent to   the positive version of that number.

9. A recipe calls for \(1\frac{3}{4}\) cups of flour. If you only have \(\frac{1}{2}\) cup of flour, how much more flour do you need?

10. The temperature at dawn was -3.5°C. By noon, it had risen by 7.2°C. What was the temperature at noon?

11. The sum of two negative rational numbers is always negative.