Surds

Rational and irrational numbers

Exact values or decimal approximations

Approximate and compare irrational numbers

Calculate decimal approximations for irrational numbers

Operations with rational and irrational numbers

Triangle Side Lengths (Investigation)

Simplify surd expressions involving powers or algebraic terms

Add and subtract numerical surds

Multiply numeric surds

Surds and binomial expansions

Rationalise the denominator

Evaluate expressions involving numerical roots

Simplify expressions involving algebraic roots

Simplify further expressions involving algebraic roots

Class VIII

Calculate decimal approximations for irrational numbers

Interactive practice questions

Evaluate $\sqrt{82}$√82.

Give your answer correct to three decimal places.

Easy

< 1min

Evaluate the following:

Easy

< 1min

Evaluate $\sqrt{18}+\sqrt{41}$√18+√41 correct to two decimal places.

Easy

< 1min

Indicate whether the following is true or false.

Medium

< 1min

Outcomes

8.NS.SSCC.2

Square roots using factor method and division method for numbers containing (a) no more than total 4 digits and (b) no more than 2 decimal places

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