1 / 6

Rearranging Formulas: The Underlying Principle

Learn the rules and principles of rearranging formulas in math, including changing the subject of a formula. Understand the steps to isolate variables and practice rounding numbers.

reubenh
Download Presentation

Rearranging Formulas: The Underlying Principle

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. Science Mathematical Skills II Rearranging Formulas Pro. Ignacio Anguera Colegio Real de Panamá 4/27 ThePerfectPartnerforyour Digital Business

  2. ROUNDING NUMBERS RULES REARRANGING FORMULAS THE UNDERLYING PRINCIPLE A formula is a mathematical equation containing two or more letters. Re-write a formula in terms of another letter. You will be familiar with the formula for the area of a circle which states: A = π r2 in which case we would say that A is the subject of the formula Alternatively, we could have written the formula as: in which case we would say that r is the subject of the formula 4/27

  3. ROUNDING NUMBERS RULES REARRANGING FORMULAS CHANGING THE SUBJECT OF A FORMULA The rules are the same as when we solved equations except we do not end up with a solution but with another formula. Whatever you do to one side, you must do to the other side too Re-write a formula in terms of another letter. OR If you move a term from one side of the equals sign to the other, we change the operation to do the opposite. • add or subtract the same quantity to or from both sides • multiply or divide both sides for the same quantity • square and square root are inverse functions (same as cube and cube root). In each case, make -a- the subject of the formula a + b = c + d Example 1: Addition/subtraction b = a·c Example 2: Multiplication/division 4/27

  4. ROUNDING NUMBERS RULES PRACTICE! In each case, make the letter given at the end, the subject of the formula 3 STEPS to isolate formulas Step 1: is it on the top? Step 2: is it alone? Step 3: is it positive? 4/27

  5. ROUNDING NUMBERS RULES PRACTICE! In each case, make the letter given at the end, the subject of the formula 3 STEPS to isolate formulas Step 1: is it on the top? Step 2: is it alone? Step 3: is it positive? 4/27

  6. ROUNDING NUMBERS RULES PRACTICE! In each case, make the letter given at the end, the subject of the formula 4/27

More Related