Created by Mr. Scientific Notation Using the calculator and Scientific Notation Calculator Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, Using the calculator for fractions Simplifying Ratios Ratio & Proportional Division

Created by Mr. Starter Questions S3.3 10cm 8cm x cm Calculator Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 20152

Created by Mr. Learning Intention Success Criteria 1.To be able to use the calculator to calculate values using scientific notation. 1.To show how to do calculation using scientific notation on the calculator. Scientific Notation S3.3 Calculator Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 20153

Using the calculator S3.3 We can use scientific notation on the calculator. Depending on your calculator you will use one of the following buttons. xyxy 10 x EXPEE  (you may have to use the shift button) Enter the 5.4x10 3 into your calculator Calculator Keys 5 4 x xyxy Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. 4

Using the calculator S3.3 xyxy 10 x EXPEE  (you may have to use the shift button) Example: 6.25x10 -7 Calculator Keys 6 2 x xyxy Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. 5 Example: 8.31x10 11 Calculator Keys x xyxy Not the subtraction button

Using the calculator S3.3 Calculate: 4 x 10 6 ÷ 8 x 10 6 It is good practice to put each value in brackets Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. 6 4 x xyxy ( ( x xyxy 0 ) 1 68) x=0.5 exe

Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. Now try Ex 7.1 and Ex 7.2 Ch 1 (page 10) 7 Using the calculator

Created by Mr. Starter Questions S3.3 y cm 5cm 12 cm Calculator Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 20158

Created by Mr. Learning Intention Success Criteria 1.To be able to use the calculator to calculate fractions. 1.To show how to do calculation using fractions on the calculator. S3.3 Fractions Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, Using the calculator

Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr Using the calculator Reminder on fractions A fraction has a numerator and denominator The value of a fraction can be calculated by dividing the numerator by the denominator A proper fraction has a value of less than 1 An improper fraction is of the form A mixed number contains whole number and fractions

Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr Using the calculator We can use the calculator when working with fractions The fraction button is : Example 1:Express as a decimal 3 = Fractions

Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr Using the calculator Example 2:Express as a decimal 5 = = 1┌21┌2 Example 3:Express as a mixed number 7 4 = 1 ┌ 3 ┌ 4 Fractions

Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr Using the calculator Example 4:Express as a improper fraction 4 2 = 14 ┌ 3 3 2nd Example 5:Add ┌ 4 ┌ = Fractions

Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. Now try Ex 8.1 and Ex 8.2 Ch 1 (page 13) 14 Using the calculator Fractions

Starter Questions Starter Questions Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Learning Intention Success Criteria 1.Understand the term ratio.. 1. To understand what a ratio is and explain how we can sometimes simplify them. Ratios 2.Calculate and simplify basic ratios. What is a ratio ? Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Ratios Ratios can be used to compare different quantities What is a ratio ? Example : There are 2 triangles and 3 rectangles. The ratio of triangles to rectangles is said to be 2 : 3 Note: The ratio of rectangles to triangles is said to be 3 : 2 Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015 Created by Mr.

Ratios Simplifying a ratio is like simplifying fractions Simplifying a ratio ? Fraction : Ratio : Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Ratios Sometimes we need to multiply to simplify Simplifying a ratio ? Ratio : Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Ratios When working with ratios, the two units MUST be the same Simplifying a ratio ? Ratio : Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Ratios By first multiplying by ten to get rid of the decimals simplifying the following ratios: Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. Simplifying a ratio ? (a)2.2 : : 332 : 3 (b)1.6 : : 961 : 6 (c)0.5 : : : 200 (d)8.5 : : 9517 : 19

Ratios By eliminating the fractions simplify the ratios. Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr. Simplifying a ratio ? 2 : 3 Multiply each side by 355 : 21 Multiply each side by 4 8 : 21Multiply each side by 12

Now try Ex 9.1 Ch1 (page 16) Ratios Simplifying Ratios Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Starter Questions Starter Questions Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Learning Intention Success Criteria 1. Explain how to work out Ratio & Proportional division by using shares. 1. Work out the number of shares for a ratio. Ratios Ratio & Proportional Division 2. Solve problems using shares. 3. Show appropriate working. Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Ratios Example :Bill and Ben share a raffle win of £400 in the ratio 3:5. How much does each get ? Ratio & Proportional Division Step 1 :Since the ratio is 3:5, there are : 3+5 = 8 shares Step 2 :Each share is worth : Step 3 :Bill gets 3 x 50 = £150 Ben gets 5 x 50 = £250 Check ! = 400 Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Ratios Example :Ryan and Ross share 24 cakes in the ratio 3:1. How many cakes does each get ? Ratio & Proportional Division Step 1 :Since the ratio is 3:1, there are : 3+1 = 4 shares Step 2 :Each share is worth : Step 3 :Ryan gets 3 x 6 = 18 Ross gets 1 x 6 = 6 Check ! = 24 Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.

Now try Ex 9.2 Ch1 (page 16) Ratios Ratio & Proportional Division Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Friday, August 21, 2015Created by Mr.