Danielle


 * 1) ** //When multiplying fractions, think **EASY TIMES**, times is easy.//

__Example: 3/7 X 4/9__ - All you have to do is multiply the two top numbers (numerators) together, and the two bottom numbers (denominators) together. - 3x4 = 12 7x9 = 63 - The answer is 12/63, which can be simplified to 4/21

__Revision Question: 5/7 X 2/3__

__Revision Answer (Link)__


 * 2) ** //**DIVISION IS MEAN!** So we don't do it. Instead we want **EASY TIMES...** With a twist!//

__Example: 3/4 ÷ 5/7__ - Twist the end fraction (So 5/7 becomes 7/5) - Change the division sign to a multiplication sign. - The problem becomes: 3/4 X 7/5 - EASY TIMES... all you have to do is multiply the two top numbers (numerators) together, and the two bottom numbers (denominators) together. - 3x7 = 21 4x5 = 20 - The answer is 21/20, which is an improper fraction. The answer is 1 1/20 as a mixed number.

__Revision Question: 6/13 ÷ 6/7__

__Revision Answer (Link)__


 * 3) **//What is a **PRISM**? It is the same size and shape (**CONGRUENT**) all the way through.//

The volume of a prism:


 * __C__**alculation
 * __A__**nswer
 * __U__**nit
 * __A__**rea of the end
 * __H__**eight
 * __S__**ketch

__Example:__ - Find the area of the end - 3cm X 4cm = 12cm²

- Multiply the area of the end by the height - 12cm X 12cm = 144cm³

- The volume of this prism is 144cm³

__Revision Question: What is the volume of this prism?__

__Revision Answer (link)__

**4)** //We can work **BACKWARDS** to solve **ALGEBRA** problems.//

__Example: 3x-4 = 17... what does x equal?__ - Work out the different stages/steps in the problem. - Work backwards through the steps to solve the problem. - As you can see, the final step when you work through the problem backwards is 21 ÷ 3. The answer is 7. - Therefore, x = 7

__Revision Question: 4(x-3) = 24...what does x equal?__

__Revision Answer (Link)__