Math proficency

How do you make a fraction into a decimal?
divide the numerator of the fraction by denominator
how to add/subtract decimals,what's the steps?
.line up the decimal points
how to do scientific Notation
move the decimal point the number of places the exponent tells you(ice cream scoops)
what do you do to get the perimeter?
add up all of the lengths then label your answers
how do you get the area
length times weight
what is the circumference?how do you get the circumference?
its the distance around the edge of a circle (remember 3 times the length of the diameter)3.14 times diameter equals circomference