FraCtiOnS

A fraction is a part of a wholeSlice a pizza, and you will have fractions: 1/2 1/4 3/8 (One-Half) (One-Quarter) (Three-Eighths)       The top number tells how many slices you have The bottom number tells how many slices the pizza was cut...

PeRcentaGes

When you say "Percent" you are really saying "per 100" So 50% means 50 per 100 (50% of this box is green) And 25% means 25 per 100 (25% of this box is green) Examples: 100% means all. Example: 100% of 80 is 100/100 × 80 = 80 50% means half. Example: 50% of 80 is 50/100 × 80 = 40 5% means 5/100ths. Example: 5% of 80 is 5/100...

VoluMe FoRmuLas

(pi = = 3.141592...) Volume Formulas Note: "ab" means "a" multiplied by "b". "a2" means "a squared", which is the same as "a" times "a". "b3" means "b cubed", which is the same as "b" times "b" times "b". cube = a 3 rectangular prism = a b c irregular prism = b h cylinder = b h = pi r 2 h pyramid = (1/3) b h cone = (1/3) b h = 1/3 pi r 2 h sphere = (4/3)...

DiViSioN

Division is splitting into equal parts or groups. It is the result of "fair sharing". Example: there are 12 chocolates, and 3 friends want to share them, how do they divide the chocolates?   12 Chocolates   12 Chocolates Divided by 3 Answer: 12 divided by 3 is 4: they get 4 each. Symbols ÷ / We use...

Multiplication

Long MultiplicationLong Multiplication is a special method for multiplying larger numbers.It is a way to multiply numbers larger than 10 that only needs your knowledge of the ten times Multiplication Table.Let us say we want to multiply 612 × 24First we multiply 612 × 4 (=2,448), then we multiply 612 × 20 (=12,240), and last we add them together...

Subtraction

Subtraction is ...... taking one number away from another.   If you have 5 apples, then subtract 2, you will be left with 3. This would be written: 5 - 2 = 3 Train YourselfYou get good at subtraction with practice... ... so we have developed Math Trainer - Subtraction to help get you trained! Subtraction TableYou can "look up" answers for simple subtraction...

Addition

Addition is ...... bringing two or more numbers (or things) together to make a new total. Here 1 ball is added to 1 ball to make 2 balls:   Using Numbers it is:      1 + 1 = 2       And in words it is:   "One plus one equals two" Example: If you add...