1. The Area Model for Multiplication Unit 7 Lesson 7 67 43 “drawing an area model”

2. Partial Products Whole (big) Parts (small) 60 + 7 40 + 3 60 + 7 2,400 40 x 60 = 2,400 280 40 x 7 = 280 180 3 x 60 = 180 21 3 x 7 = 21 40 + 3 Rectangle Sections 43 67 43 x 67

3. 30 + 9 50 + 4 30 + 9 30 x 50 = 1,500 30 x 4 = 120 9 x 50 = 450 9 x 4 = + 36 2,106

4. 60 + 7 40 + 3 60 + 7 40 + 3 a c b d 43 = 40 + 3 A X 67 = 60 + 7 40 x 60 = 2,400 40 x 7 = 280 3 x 60 = 180 3 x 7 = 21 2, 881 B 43 X 67 2,400 280 180 21 2, 881 Expanded Notation

5. Try these. Use any method you like. There are 32 cattle cars on today’s train to Detroit. Each car holds 28 cows. How many cows are on the train?

6. Another Example Maria jogs 21 miles every week. If there are 52 weeks in a year, how many miles does Maria jog a year?