Lesson 1-2 Multiplying Rational Numbers Obj: The student will be able to multiply fractions, mixed numbers and decimals. HWK: Vocab: 1) mixed numbers 2) improper numbers COS: 7-NS2

Rules for multiplying and dividing rational numbers If the signs of the factors are the same, the product/quotient is positive + • + = + - • - = + / + ÷ + = + - ÷ - = + If the signs of the factors are different, the product/quotient is negative + • - = - - • + = - / + ÷ - = - - ÷ + = - (If more than 2 factors, count the number of negative signs – if even # of – signs = +, if odd # of – signs = -)

Multiply. Write each answer in simples form Ex 1) 6( 2 3 ) Ex 2) -2(13 1 5 ) Ex 3) - 3 5 (- 1 4 ) Ex 4) 5 12 (- 12 5 )

Multiply Ex 5) – 5.2(- 5) Ex 6) - 0.07(4.6)

Ex 7) Andrew walks his dog 1 8 mile each day Ex 7) Andrew walks his dog 1 8 mile each day. What is the total distance that Andrew walks his dog in a 5-day week?

Ex 8) Explain how to multiply A fraction and a mixed number Two decimals A decimal and a fraction