1. Using the surds √2 √8 √10 √160 √320 and the operations ÷ and ×
How many ways can you make 4 ?
You can use each surd more than once.

2. What is the perimeter of this triangle, in exact form?
2cm
6cm

3. Surds Basic simplifying rules Writing surds in their simplest form
Expanding brackets (single and double)
Rationalising the denominator

4. Basic Simplifying Rules
3 × 2
= 3 ×2
= 6
6 2 =
= 3

5. Writing Surds in their simplest form18
= 2 ×9
= 2 × 9
=3 2 50
= 2 ×25
= 2 × 25
=5 2