N1 Number Notation, Place Value

NUMBERS

 – why do we need to know them well

Numbers are usually written using: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. 

(1) To count: 1, 2, 3 strawberries    

Number Notation

PLACE VALUES

Value is the positional value of the digit in the number or where the digit is in the number. 

Stands for is another term used to describe ‘value’ in math.

What is a digit?

Digits are symbols or characters to represent a number in writing. 

Method to find the Value in a number

Step1: Underline the digit in the number given

Step2: Replace the numbers after the digit with zeros

Step3: Write the answer in numeric form

Example:

What is the value of the digit 4 in 854013?

Step1: Underline 4                                             854 013

Step2: Replace number to right of 4 to 0            4000

  Step3: Write : Answer: 4000

Practice:

What is the value of digit 3 in 

           (a) 89300,          (b) 55293,         (c) 30984

More practices: Whole-number-revision-practice

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