how do I find the median?

list all the numbers in ascending order, cross them off first, then last, until you get the number in the middle, if there two numbers, find the of mean them.

how do I find rate in simple interest?

put simple interest over principal multiplied by time.

how do I find the range?

calculate the difference between the highest and lowest values.

how do I find principal in simple interest?

put simple interest multiplied by 100 over rate multiplied by time.

how do I subtract fractions with different denominators?

find the lcm of the denominators then subtract them like normal.

How do I find time in simple interest?

put simple interest multiplied by 100 over principal multiplied by rate.

how do i compare fractions with different denominators

find the lcm for both denominators, use that as a denominator for the new fractions, after finding the lcm for the old fractions, use that to find which is bigger or smaller.

how many lines of symmetry does a square have

4

how many lines of symmetry does a rectangle have?

2

how many lines of symmetry does a rhombus have

2

how many lines of symmetry does a trapezium have?

1

how many lines of symmetry does a parallelogram have

0

how many lines of symmetry does an equilateral triangle have

3

how many lines of symmetry does an isosceles triangle have?

1

how many angles are in a pentagon

5

how many angles are in an octagon

8

how many angles are in a hexagon?

6

the opposite sides of an octagon are:

parallel

the opposites sides of a rhombus are

equal

how many edges does a triangular prism have

9

how many edges does a square-based pyramid have?

8

how many edges does a triangular based pyramid have?

6

how many edges does a cylinder have

2