Plz ! estimate. then find the sum or difference.
743.5 - 462.87=
98.01 + 52.003=
74.9 - 16.227=

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Arectangular courtyard is 12 feet long and 8 feet wide. a tile is 2 feet long and 2 feet wide. how many tiles are needed to cover the courtyard?