1 3 Dividing Rational Numbers Learning Target I

1 -3 Dividing Rational Numbers Learning Target: I can • divide fractions • divide decimals.

Numbers 1 -3 Dividing Rational Vocabulary Reciprocal • Two numbers that have a product of 1 • Flip a fraction upside down • example: 3 and 4 4 3

1 -3 Dividing Rational Numbers Take a look at these:

Rational Numbers 1 -3 Dividing Example 1: I can divide fractions. Divide. Write the answer in simplest form. 1 5 ÷ 2 11 1 = 5 2 5 ÷ Multiply by the reciprocal. • 2 11 11 1 = 2 5 No common factors. • 11 1 10 = 11 Simplest form

Rational Numbers 1 -3 Dividing Example 2: I can divide fractions. Evaluate the expression for the given value of the variable. k ÷ 4 for k = 5 5 4 = 5 • 5 5÷ 1 4 5 5 • 5 1 25 = = 64 = 4 1 • 4 Multiply by the reciprocal. Divide.

Rational Numbers 1 -3 Dividing Example 3: I can divide fractions. Divide. Write the answer in simplest form. 23÷ 2 8 ÷ 2 38 ÷ 2 = 19 8 2 1 19 1 8 2 19 • 1 = 8 • 2 = Write as an improper fraction. Multiply by the reciprocal. No common factors 3 16 19 ÷ 16 = 1 R 3 19 = 16 = 1

1 -3 Dividing Rational Numbers Ex 1: I can divide decimals Find 0. 384 ÷ 0. 24 = 0. 384 100 = 38. 4 100 0. 24 24 = 38. 4 24 = 1. 6 Divide.

1 -3 Dividing Rational Numbers Example 2: I can divide decimals. Find 0. 585 ÷ 0. 25 = 0. 585 100 = 58. 5 100 0. 25 25 = 58. 5 Divide. 25 = 2. 34

1 -3 Dividing Rational Numbers Do you have the learning targets mastered?

Numbers 1 -3 Dividing Lesson. Rational quiz: I can divide fractions. Divide. Write the answer in simplest form. 7 ÷ 3 4 15 3 4 7 7 ÷ Multiply by the reciprocal. = • 4 15 15 3 7 • 4 No common factors. = 15 • 3 28 = 45 Simplest form

1 -3 Dividing Rational Numbers Lesson Quiz: I can divide decimals 2. Divide. – 12 ÷ 2. 5 A. – 4. 8 B. – 4. 3 C. 5. 0 D. 5. 2

Assignment: 1 -3 Dividing Rational Numbers page 17, problems 24 -46 evens, 47, 48, 50, 54 -56