Year 9- Surds- Challenge

What is a rational number ?

• A rational number  is a number that cannot be written as a fraction.
• A rational number is a number that can be written as a ratio.
• A rational number cannot be a repeating  decimal.

What is a surd?

• A recurring decimal

• An irrational number

• A fraction

• A rational number

Which statement relating to surds is incorrect?

• Surds are irrational numbers.
• The four operations can be performed on surds.
• Surds can be written as fractions.
• The radical sign acts as a grouping symbol.

√3  

• rational
• irrational

Select a surd.

• √2

• √4

• √99

• √20

Simplify the following surd...

• 2√2

• 4√2

• 2√4

• 3√2

Simplify the following surd...

• 4√2

• 2√3

• 6√2

• 4√3

Simplify the following surd...

• 3√2

• 2√3

• 9√2

• 3√6

Simplify the following surd...

• 6√2

• 2√6

• 8√2

• 4√6

Simplify fully: 
√32

• 4√8
• 16√2
• 4√2
• 4√4