Surds

Hong Kong

Stage 1 - Stage 3

Fill in the blanks to complete the question below.

The number $\sqrt{\frac{2}{7}}$√27 can be rewritten without a radical in the denominator by multiplying both the numerator and denominator by $\sqrt{\editable{}}$√.

Easy

Less than a minute

Fill in the blanks to complete the statement below.

Rationalise the denominator for the given expression:

$\frac{1}{\sqrt{11}}$1√11

Rationalise the denominator and give your answer in the simplest form: $\frac{7}{\sqrt{21}}$7√21

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