numeracy day 9, 2011-12

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Math Toda1) Find a seat. There was no HW

2) Get out your math notebook and get to workon the problems below:

Souvenirs While visiting Kuala Lumpur,you buy a friend a souvenir costing rringgit (the currency of Malaysia). Usethe expression 130 - r to find out howmuch of the 130 ringgit you will have leftafter you buy a belt buckle costing 40ringgit.

6 September 2011

Equations andMental Math

Today you willevaluate equations

and variableequations using

mental math.

Warm ups Note-Taking Loading eTexts Lesson 1.6 HW Review

HW: Worksheet 1.6 Front-Side, ODDS Back-Side, ALL

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Souvenirs While visiting Kuala Lumpur, you buy a friend asouvenir costing r ringgit (the currency of Malaysia). Use theexpression 130 - r to find out how much of the 130 ringgit you willhave left after you buy a belt buckle costing 40 ringgit.

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11. 250 - 2m 12. m - n 13. m + 3n

Evaluate the expression when m = 20 and n = 10.

8. mn4

9. 3m * n 10. 2n +

14. 260 - n 2 15. n + 19 - m

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A solution of an equation is a number that, whensubstituted for a variable, makes the equation true.

Eguations:

You can use equations to answer many different types ofquestions.

An equation is a mathematical sentence formed byplacing an equal sign (=) between two expressions .

An expression represents a particular value. Itconsists of numbers and operations to be performed.

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3. 12 I q = 3; q = 6 4. 14n = 42; n = 3

Tell whether the given number is a solution of the equation.

1. 3y = 21 ; Y = 6 2. x-3=7; x=10

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Using Mental Math to Solve Equations.

1. y - 8= 4 What number minus 8 equals 4?

2. 10x = 90 10 times what number equals gO?

3. n I 4 = 7 What number divided by 4 equals 7?

4. Y + 2 = 2 What number plus 2 equals 2?

5. 6x = 6 6 times what number equals 6?

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Put textbooksaway. We willpractice using

eTexts for the rest

of our time today.

Salmon Migration:You are 100 miles upstream from the sea, Salmon migratingupstream have been spotted 41 miles from the sea. Use MentalMath to solve the equation d + 41 = 100 to find the distance d,in miles, between you and the salmon.

What if?

Suppose the salmon are 29 milesfrom the sea, and you are 60 milesfrom the sea. How far are you fromthe salmon?

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Ugload electronic Math Texts

Create a new folder inside the"Textbook" folder that youcreated on your desktopyesterday. This folder will becalled "Math." You should nowhave a "Science" folder and a"Math" folder in your"Textbook" folder.

It is important that you direct

all materials into this folder asyou set up your Math eText.

6 September 2011

Equations andMental Math

Today you willevaluate equations

and variableequations using

mental math.

Warm ups Note-Taking Loading eTexts Lesson 1.6 HW Review

HW: Worksheet 1.6 Front-Side, ODDS Back-Side, ALL

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68 Classwork: You can work alone or witha partner that is in your Set List. Problemsare on text book pages 36 - 38.

Set A - B:Tyler, Lana, Julia,

Annabelle, Andrea,Thaddeus, Gwen

Problems: 3 - 29 000-

numberedproblems only

46 - 52, EVEN-numberedproblems only

Set B - c:Chloe, Tanvi, Miranda,

Vibhuti, Eric, Miles,

Sydney

Problems:.3 - 45 000-

numbered

problems only 46 - 52, EVEN-


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6A Classwork: You can work alone or witha partner that is in your Set List. Problemsare on text book pages 36 - 38.

Set A - B:Sofia, Cooper, Eytan, Roey,

Carolina, Carla, Kayla,Elisabeth

Problems: 3 - 29,000-



Set B - c:Kaiya, Jocelyn, David,

Tommy, Kowin, Martina,Marissa

Problems:.3- 45,000-



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6 September 2011Equations and Mental Math

Today you will evaluate equations and variable equations using mental math.

HW:e Worksheet 1.6

Front-Side, ODDS Back-Side, ALL

numeracy day 9, 2011-12

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