Maths Dictionary · SS 2
Surd
Simple meaning
A square root that cannot be written as an exact whole number or fraction.
Example
√2 and √5 are surds; √9 = 3 is not.
See it
From the Simplifying Surds lesson. Try moving things around.
√72 — 72 little squares
Square numbers that divide 72:
Pick a square number to regroup the 72 squares.
Number under the root
72