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Squares and Square Roots 23 October, 2014

Squares and Square Roots 23 October, 2014. Objective Find the square and square root of a number Levels 6 – 7. Squaring a Number. 4 2 means 4 x 4 = 16. It is called 4 squared and 16 is called a square number. A square with sides that are 4 long has an area of 16 units 2 4 2 = 16

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Squares and Square Roots 23 October, 2014

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  1. Squares and Square Roots 23 October, 2014 Objective Find the square and square root of a number Levels 6 – 7

  2. Squaring a Number 42 means 4 x 4 = 16. It is called 4 squared and 16 is called a square number. A square with sides that are 4 long has an area of 16 units2 42 = 16 You can see the reason for calling it 4 squared and why 16 is a square number

  3. Copy and complete this table

  4. Answers

  5. Square Roots √16 means ‘the square root of 16’ and √16 = 4 A square with an area of 16 has sides that are 4 long. There is a special button on your calculator that will help you to find square roots. It looks like this √ Find it on your calculator and then try to do the next slide.

  6. Copy and complete this table

  7. Answers

  8. Finding a square root without the help of the √ button on your calculator can be done by a method called trial and improvement.

  9. √19 = x What is the value of x? You now that x2 = 19 ( x times x = 19)

  10. x 2 = 19 What is the value of x?

  11. x 2 = 19 What is the value of x?

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