Think of 806 as 800 add 6.
Write three hundreds and five separately in figures than add them.
Add them altogether.
Think about the fifth number which would come when you start counting from 475.
Read 49 as 40 and 9.
Think about the number which would give you 450 when you add 50 to it.
Calculate the total amount.
Say the number after 47.
Think about the place value of the digit 4.
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