Add them altogether.

Read 49 as 40 and 9.

You can add both amounts to get the final answer.

Think about the number which would give you 450 when you add 50 to it.

Think about the place value of the digit 4.

Write three hundreds and five separately in figures than add them.

Say the number after 47.

Make sure unit place digit is 5.

Think about a place value chart.

Add 50 ten times

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