1 / 17

Simplifying Surds

Simplifying Surds. Simplify: Answer:. Look at the example and try to work out how to get to the answer Stuck? Use the hint cards to help (try to only use one at a time!) When you have worked it out, write the rule on your worksheet:

darrenr
Télécharger la présentation

Simplifying Surds

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Simplifying Surds Simplify: Answer: • Look at the example and try to work out how to get to the answer • Stuck? Use the hint cards to help (try to only use one at a time!) • When you have worked it out, write the rule on your worksheet: ‘When simplifying surds, always look for a factor that is a ….’ • Now try the green, amber and red questions!

  2. HINT CARD 1

  3. HINT CARD 2

  4. HINT CARD 3

  5. HINT CARD 1 Use the following rule: Simplifying Surds

  6. HINT CARD 2 • Look for a factor that is a square number and write it as a sum e.g. Simplifying Surds

  7. HINT 3 • Follow this worked example: Look for a factor that is a square number This is how the final answer should be written Simplifying Surds

  8. Squaring Surds 1. 2. 3. 4. 5. • Try these sums on your calculator • What do you find out? • Write the rule on your sheet: ‘When we square a surd…’ • Try the green, amber and red sums.

  9. Why Bother With Surds? These are not surds: These are surds: • Type each of the sums into the calculator. • Look carefully at the answer and think about why we use surds • Use the hint card if you need help • Write your findings on your sheet • Try the green, amber and red questions

  10. HINT CARD

  11. HINT • Look at the numbers after the decimal point. • What words would you use to describe the order that they appear? Why bother with surds?

  12. Example: Your Turn: Adding Surds • Remember how to collect like terms in algebra? • Adding and subtracting surds works in exactly the same way! • Look at the worked example and discuss the question

  13. HINT CARD

  14. HINT 1 • Think of each surd as ‘x’ and collect like terms like you would in algebra! E.g. Think of these as 4x – 2x = Adding surds

  15. Simplify: Answer: Multiplying Surds • When multiplying surds, write out the expression in full before attempting to simplify it. • Sound familiar? It’s exactly the same as algebra! • Can you fill in the ‘working out’ for this question? Use the hints to help you. • Fill in the rule on your sheet: ‘When multiplying surds, always write out…’ Try the green, amber and red questions!

  16. HINT CARD

  17. HINT • Write out the sum in the longest way first… …then multiply out the whole numbers… …then multiply the surds together! Multiplying surds

More Related