We cannot take half of 9 people. The even numbers, then, are the numbers divisible by 2: 2, 4, 6, 8, and so on. The odd numbers are 1, 3, 5, 7, and so on. If you do not know half of some even number, you can find it by decomposing it mentally into two even numbers whose half you do know.
To draw a shape, line or angle accurately using a compass and straightedge (ruler). Sometimes you are also allowed to use a protractor and triangle.
Math is the science of counting and manipulating of numbers and numerical concepts. It ranges from simple arithmetic, to geometric shapes, to complex variables and calculation â¦ s that describe time, space, and motion. Do the Math with an Online Calculator For many people, whether in school or out, math is the bane of their existence. 2  Many an hour has been spent in math class by students wondering when this particular skill wouâ¦.