1 STANDARD 1.2 MULTIPLYING FRACTIONS PROBLEM 1 PROBLEM 4PROBLEM 3 PROBLEM 2 PROBLEM 5 PROBLEM 8PROBLEM 7 PROBLEM 6 PROBLEM 9 AREA OF A RECTANGLE EQUIVALENT FRACTIONS END SHOW PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

2 1.2 Add, subtract, multiply and divide rational numbers and take positive rational numbers to whole-number powers 1.2 Sumar, restar, multiplicar y dividir números racionales y elevar números positivos racionales a potencias de enteros. GRADE 7: Number Sense PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

3 Area of a Rectangle L A = L W where: W= width L= length A= area W STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

4 Find the area of the following rectangle. 7 in A = L W where: W= 4 in L= 7 in A= ? 4 in A = (7in)(4in) A = 28 in 2 The area of the rectangle is 28 square inches. STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

5 of = = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

EQUIVALENT FRACTIONS = 2 4 = 3 6 = 4 8 = 6 12 FRACTION in lowest termsFRACTION IN HIGHEST TERMS GOING FROM lowest terms to HIGHEST TERMS = 1 2 STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

= = = = 1 2 = 1 2 FRACTION in lowest termsFRACTION IN HIGHEST TERMS EQUIVALENT FRACTIONS GOING FROM HIGHEST TERMS to lowest terms STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

8 of = = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

9 of = = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

10 of = = 1 4 Why? = 3 12 = 1 4 FRACTION in lowest termsFRACTION IN HIGHEST TERMS STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = 2 24 = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = = 1 Why? FRACTION in lowest termsFRACTION IN HIGHEST TERMS = 2 24 = 1 12 STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = 1 8 = What happens when we multiply numbers greater than 1? (3)(5) = is greater than 3 and 5. So, when we multiply numbers greater than 1 we get a bigger number that any of them. When we multiply numbers smaller than 1, we get a number smaller than any of them. Can you observe that multiplying numbers less than 1 we have one smaller that any of the numbers in the product? 1 8 is less than and STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = 1 8 = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = 3 8 = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = 2 6 = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = = 1 3 Why? FRACTION in lowest termsFRACTION IN HIGHEST TERMS = 2 6 = 1 3 STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = = 9 STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = = STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved

of = = 5 8 Why? FRACTION in lowest termsFRACTION IN HIGHEST TERMS = = 5 8 STANDARD 1.2 PRESENTATION CREATED BY SIMON PEREZ. All rights reserved