Oral and Mental Starter

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Presentation transcript:

Oral and Mental Starter Put your answers through the PRIVATE text chat! I throw a dice and score is d. If I....... > double the score and add 7, the result is 15. What is d? I throw a dice and score is e. If I....... > add 6 and then double it, the result is 18. What is e? I throw a dice and score is f. If I....... > multiply by 5 and subtract 6, the result is 4. What is f?

Using Algebraic Expressions: Lesson 1 By the end of this unit of work, you should be able to: ·Use letter symbols ·Simplify linear expressions by collecting like terms ·Solve simple linear equations Keywords: Equal (=) Expression Equation Unknown Adjacent Solve Number Towers You can construct tower totals like this one: 6 3 8 9 11 20 6+3 3+8 9+11

Complete these towers 20 16 48 40 53 100

34 15 100 n n 34 15 100 Work out the second tier: This tower uses the letter n for an unknown number 34 15 100 n Once you know the tower total you can work out the value of n First you form an EXPRESSION for the total using n Work out the second tier: n 34 15 Add together the second tier: The EXPRESSION for the total is: 100 The tower total is 100, so you can write: Now you can solve the EQUATION: an equation uses an equals sign (=) to link two or more EXPRESSIONS

Let's try this together! x 13 10 2 48 Working out:

Let's try this together! 2 n 3 9 Working out: