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25-Aug-14Created by Mr. Lafferty Maths Dept. Revision of Level E Algebra Harder Equations Equations & Inequalities www.mathsrevision.com Equations with.

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Presentation on theme: "25-Aug-14Created by Mr. Lafferty Maths Dept. Revision of Level E Algebra Harder Equations Equations & Inequalities www.mathsrevision.com Equations with."— Presentation transcript:

1 25-Aug-14Created by Mr. Lafferty Maths Dept. Revision of Level E Algebra Harder Equations Equations & Inequalities Equations with Brackets Equations with Fractions Solving Inequalities Harder Fractions

2 25-Aug-14Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions

3 25-Aug-14Created by Mr. Lafferty Maths Dept. Learning Intention Success Criteria 2.Solving simple algebraic equations. 1.To revise Level E using the rule ‘change side change sign’. Revision of Level E 1.Know rule ‘change side change sign’. Equations & Inequalities

4 25-Aug-14Created by Mr. Lafferty Maths Dept. We use the rule “change side change sign” Revision of Level E Reminder ! Examples Equations & Inequalities

5 25-Aug-14Created by Mr. Lafferty Maths Dept. Reminder ! Revision of Level E “Opposite of multiplication is division” Examples Equations & Inequalities

6 25-Aug-14Created by Mr. Lafferty Maths Dept. Reminder ! Revision of Level E We use the rule “change side change sign” Examples Equations & Inequalities

7 25-Aug-14Created by Mr. Lafferty Maths Dept. Now try Exercise 1 Ch43 (page 171) Revision of Level E Equations & Inequalities

8 25-Aug-14Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions 6x 2x 100 o 60 o

9 25-Aug-14Created by Mr. Lafferty Maths Dept. Learning Intention Success Criteria 1.Use same rules to solve equations with more than one x term. 1. To explain how we use the same rules to solve harder equations were we have more than one x term. Harder Equations Equations & Inequalities

10 25-Aug-14Created by Mr. Lafferty Maths Dept. Harder Equations We use the rule “change side change sign” Same old Rule ! Examples Equations & Inequalities

11 25-Aug-14Created by Mr. Lafferty Maths Dept. Now try Exercise 2 Ch43 (page 173) Harder Equations Equations & Inequalities

12 25-Aug-14Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions

13 25-Aug-14Created by Mr. Lafferty Maths Dept. Learning Intention Success Criteria 1. To show how to solve equations with brackets. 1. Multiply out brackets. 2. Apply ‘change side change sign’ rule. Equations with Brackets Equations & Inequalities

14 25-Aug-14Created by Mr. Lafferty Maths Dept. Multiply out the brackets first and then Apply ‘change side change sign’ rule Examples Equations with Brackets Equations & Inequalities

15 25-Aug-14Created by Mr. Lafferty Maths Dept. Examples Equations with Brackets Equations & Inequalities

16 25-Aug-14Created by Mr. Lafferty Maths Dept. Now try Exercise 3 Ch43 (page 174) Equations with Brackets Equations & Inequalities

17 25-Aug-14Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions 5cm 11cm

18 25-Aug-14Created by Mr. Lafferty Maths Dept. Learning Intention Success Criteria 1. To show how to solve equations that contain fractional terms. 1. Multiply every term to get rid of fractional term. Equations with Fractions 2. Apply ‘change side change sign’ rule. Equations & Inequalities

19 25-Aug-14Created by Mr. Lafferty Maths Dept. multiply EVERY term to get rid of fractional term. and Apply ‘change side change sign’ rule Examples Multiply EVERY term by 2 Equations with Fractions Equations & Inequalities

20 25-Aug-14Created by Mr. Lafferty Maths Dept. multiply EVERY term to get rid of fractional term. and Apply ‘change side change sign’ rule Examples Multiply EVERY term by 12 Equations with Fractions Equations & Inequalities

21 25-Aug-14Created by Mr. Lafferty Maths Dept. Now try Exercise 4 Ch43 (page 175) Equations with Fractions Equations & Inequalities

22 25-Aug-14Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions 7cm 13cm 15cm

23 25-Aug-14Created by Mr. Lafferty Maths Dept. Learning Intention Success Criteria 1. To show how to solve HARDER fractional equations using all the rules learned so far. 1. Know all rules learned so far. 2. Use these rules to solve harder equations. Harder Fractional Equations with Brackets Equations & Inequalities

24 25-Aug-14Created by Mr. Lafferty Maths Dept. multiply EVERY term to get rid of fractional term. and Apply ‘change side change sign’ rule Examples Multiply EVERY term by 3 Harder Fractional Equations with Brackets Equations & Inequalities

25 25-Aug-14Created by Mr. Lafferty Maths Dept. Example Multiply EVERY term by 12 Harder Fractional Equations with Brackets Equations & Inequalities

26 25-Aug-14Created by Mr. Lafferty Maths Dept. Now try Exercise 5 Ch43 (page 176) Harder Fractional Equations with Brackets Equations & Inequalities

27 25-Aug-14Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions

28 25-Aug-14Created by Mr. Lafferty Maths Dept. Learning Intention Success Criteria 1. To show how we can solve inequalities using the same rules we use for equations. 1. Understand the term inequality. 2. Solve inequalities using the same method as equations. Solving Inequalities Equations & Inequalities

29 25-Aug-14Created by Mr. Lafferty Maths Dept. Inequalities are similar to equations except we replace the “=“ with one of the following symbols : Solving Inequalities Less than or equal to Greater than or equal to Greater than Less than The Good News Equations & Inequalities

30 25-Aug-14Created by Mr. Lafferty Maths Dept. Solving inequalities is almost identical to solving equations : Solving Inequalities Example 1 x is any value less than 4 Even Better News ! Equations & Inequalities

31 25-Aug-14Created by Mr. Lafferty Maths Dept. Solving inequalities is almost identical to solving equations : Solving Inequalities Example 2 x is any value greater than or equal to 5 Equations & Inequalities

32 25-Aug-14 Solving Inequalities Equations & Inequalities The only one to watch out for is when you are dividing by a negative Example 8 – 3m < 2 -3m < -6 m Subtract 8 from each side Divide across by -3 and change the Sign So m > 2 >

33 25-Aug-14 Solving Inequalities Equations & Inequalities Example 2 5( x – 1 ) - 8x ≥ x – 5 – 8x ≥ x - 5 ≥ x ≥ - 12 x ≤ So x ≤ 4

34 25-Aug-14Created by Mr. Lafferty Maths Dept. Now try Exercise 6 Ch43 (page 177) Solving Inequalities Equations & Inequalities


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