Math Lesson 9
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1) The document introduces Md. Abdul Quddus from the Mathematics department and outlines the learning objectives of expressing algebraic expressions and identifying variables, coefficients, and terms. 2) It defines key algebraic concepts such as variables, constants, coefficients, terms, and like terms. 3) Examples are provided to demonstrate these concepts, including completing a table to identify variables and expressions for word problems.
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Math Lesson 9
- 1. Welcome Md. Abdul Quddus Department: Mathematics Campus : 05
- 2. Chapter : Four Lesson declaration
- 3. Learning outcome At the end of this lesson students will be able. . to express algebraic expression to find the variable and coefficient
- 5. Definitions • Variable – A variable is a letter or symbol that represents a number (unknown quantity). • 8 + n = 12
- 6. Definitions • A constant is a number that does not change. • A coefficient is a number multiplied or divided by a variable. 6x + 5 6 is the coefficient, x is the variable, and 5 is the constant.
- 7. Definitions • A term is a part of an expression that are added or subtracted 5x + 6 – 4x This expression has 3 terms: 5x, 6, and 4x • A like term are terms who have the same variable raised to the same power In the expression above, 5x and 4x are like terms
- 8. Complete This Table n n - 3 5 10 21 32 2 7 18 2 9
- 9. Write an Algebraic Expression for These Situations • Scott’s brother is 2 years younger than Scott • The sum of two numbers is 12 • The difference between two numbers is 5 s - 2 v + c = 12 m – n = 5
- 10. •Express three times of x and five times of y and then subtract Home Work