1. Do Now 1/22/10 Take out HW from last night. Take out HW from last night. Text page 240, #8-34 evens Text page 240, #8-34 evens Copy HW in your planner. Copy HW in your planner. Text page 245, #16-34 evens, #37 Text page 245, #16-34 evens, #37 In your journal, explain the process (steps that you would take) to multiply two fractions together. Then simplify the following. In your journal, explain the process (steps that you would take) to multiply two fractions together. Then simplify the following.

2. Homework Text p. 240, #8-34 evens 8) 5/16 8) 5/16 10) -7/24 10) -7/24 12) 22 2/3 12) 22 2/3 14) -11 1/4 14) -11 1/4 16) 5 16/19 16) 5 16/19 18) -35 3/4 18) -35 3/4 20) 2 lb. 20) 2 lb. 22) $337.50 24) 20b 26) 3d /52 28) a b /18 30) -7/20 32) 2 1/4 34) -1 13/14 12 4 6 2

3. Objective SWBAT divide fractions and mixed numbers. SWBAT divide fractions and mixed numbers.

4. RECIPROCAL – two nonzero numbers whose product is 1.

5. Find the Reciprocals

6. Section 5.5, “Dividing Fractions” Dividing Fractions To divide fractions: 1. Rewrite fractions as improper fractions (when necessary) 1. Rewrite fractions as improper fractions (when necessary) 2. Write the reciprocal of the second fraction. 2. Write the reciprocal of the second fraction. 3. Multiply the numerators and denominators. 3. Multiply the numerators and denominators. 4. Simplify if necessary. 4. Simplify if necessary.

7. Divide Multiply by the RECIPROCAL Divide (cancel) common factors Multiply 5 -11 Assign negative sign to the numerator

8. Try It Out!! Solve

9. Word Problem Number of strips = cutting board width ÷ strip width You want to join strips of wood that are 15 inches long and 1 5/8 inches wide to make a cutting board that is at least 12 inches wide. How many strips are needed?

10. Try It Out!! Solve

11. Geometry Find the height of the figure.

12. Homework Homework Text page 245, #16-34 evens, #37 Text page 245, #16-34 evens, #37