Mastering Algebraic Expressions and Formula Rearrangement

Learn to write algebraic expressions, manipulate formulas, calculate costs based on equations, and change formula subjects efficiently.

• Algebra
• Expressions
• Formulas
• Rearrangement
• Mathematics

charity Follow

Uploaded on May 12, 2024 | 0 Views

Download Presentation

Please find below an Image/Link to download the presentation.

The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.

Presentation Transcript

1. How would you write the algebraic expression? 2? Multiply a number ( ? ) by two. 2? + 4 Multiply a number by two and add 4. 3? 5 Multiply a number by three and subtract 5. ?2+ 6 Square a number and add 6 ? 8 Square root a number and subtract 8 ? 5 Subtract 5 from a number and square root everything RETRIEVE INSTRUCT PRACTISE SECURE

2. A decorating firm works out the cost of a job using this formula: ? = 25? + 150 Where C represents the total cost and t is the number of hours of work needed. What would the charge be for a job that took 10 hours? RETRIEVE INSTRUCT PRACTISE SECURE

3. A decorating firm works out the cost of a job using this formula: ? = 25? + 150 Where C represents the total cost and t is the number of hours of work needed. How many hours of work would be required to charge 462.50? RETRIEVE INSTRUCT PRACTISE SECURE

4. Often formulae need to be rearranged so that they can be used to calculate other unknown values within a problem. Rearranging formulae is also referred to as changing the subject. RETRIEVE INSTRUCT PRACTISE SECURE

5. Which formula has a subject? RETRIEVE INSTRUCT PRACTISE SECURE

6. Which formula has a subject? RETRIEVE INSTRUCT PRACTISE SECURE

7. Changing the Subject of a Formula ? 3 5 = ? ? ? 3 5 ? 3(? + 5) 3 + 5 3? + 15 ? = RETRIEVE INSTRUCT PRACTISE SECURE

8. ? + 5 2 = ? ? ? + 5 2 ? 5 2 2? 5 ? = 2? 5 RETRIEVE INSTRUCT PRACTISE SECURE

9. 4? 5 = ? ? 5 4 ? ? + 5 4 ? 4 + 5 ? + 5 4 ? = RETRIEVE INSTRUCT PRACTISE SECURE

10. ?2 6 = ? ? ? ?? 6 ? ??? + 6 ? + 6 ? = ? + 6 RETRIEVE INSTRUCT PRACTISE SECURE

11. Change the subject of these formulae. ? + 3 5 ? =? + 3 ? = 5? 3 4? 3 = ? a) d) = ? 4 ? =? 2 ?2+ 4 = ? ? = ? 4 5? + 2 = ? b) e) 5 ? 2 7 = ? c) f) ? = ?2 5 ? = 2? + 14 ? + 5 = ? RETRIEVE INSTRUCT PRACTISE SECURE

12. Further Practice make ? the subject RETRIEVE INSTRUCT PRACTISE SECURE

13. Check your work RETRIEVE INSTRUCT PRACTISE SECURE

14. EVERY CHILD A READER Challenge Scientific Formula RETRIEVE DECODE CONNECT VISUALIS E SUMMARI SE INFER PREDICT EXAMINE RETRIEVE INSTRUCT PRACTISE SECURE