tyrell says $750 is about $800. Sara says $750 is about $700. Who is correct? Explain? Its number sense.

Answer 1

See this previous answer.

http://www.jiskha.com/display.cgi?id=1285625959

Answer 2

$750 rounds up to $800 because 5 rounds up to 10 and 15 rounds to 20 and 50 to 100
so 750 breaks into 700 and 50
50 rounds up to 100 + the 700=$800
answered by year 7