Adding and Subtracting Rational Numbers
This worksheet focuses on adding and subtracting rational numbers, including fractions, decimals, and mixed numbers, at a Grade 9 level.
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Adding and Subtracting Rational Numbers
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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 \(-5.6 + 2.3\)?
-7.9
-3.3
3.3
7.9
6. Evaluate: \(12.75 - (-4.2)\)
8.55
16.95
-8.55
-16.95
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.
True
False