Multiplication of surds

12 questions

1. Three of the surds are like surds. Which one is not?
2. Three of the surds are like surds. Which one is not?
3. 10\sqrt {3} + a\sqrt {3} = -3\sqrt {3}. What is the value of a?
4. Simplify the expression \sqrt {12} + \sqrt {3} - \sqrt {27}
5. True or false? \sqrt {20} and \sqrt {45} are like terms.
6. Simplify the expression 2\sqrt {15} + 3\sqrt {20} - 7\sqrt {80}
7. Calculate \sqrt {99} \times \sqrt {99}
8. Calculate \sqrt {3.9} \times \sqrt {3.9}
9. When multiplying surds, we ___ the radicands.
10. Match up the multiplications with the simplied answers.
11. When dividing surds we ___ the radicands.
12. Simplify the following expression: \sqrt {12} \div \sqrt {3}

License: OGL