Surds, roots and irrational numbers

Surds, roots and irrational numbers Quiz

IB MYP Maths Standard: Quiz

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5 questions, one answer each

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1. Simplify $\sqrt{72}$ .
- A. $36\sqrt2$
- B. $8\sqrt3$
- C. $6\sqrt2$
- D. $2\sqrt6$
2. Which of these numbers is irrational?
- A. $\sqrt{20}$
- B. $\sqrt{16}$
- C. $\sqrt[3]{27}$
- D. $\sqrt{49}$
3. Find $\sqrt{12}+\sqrt{27}$ in simplest form.
- A. $\sqrt{39}$
- B. $5\sqrt6$
- C. $6\sqrt3$
- D. $5\sqrt3$
4. Find $\sqrt3\times\sqrt{12}$ .
- A. $6$
- B. $\sqrt{15}$
- C. $36$
- D. $12$
5. Find $\sqrt[3]{64}$ .
- A. $8$
- B. $4$
- C. $32$
- D. $16$