1. Matt was making a clay vase in art. He decided to paint it three different colors. He painted the bottom 12 inches red, the middle 7 inches yellow, and the top 14 inches green. How tall is the clay vase?

2. In this lesson, you will solve length word problems by adding and subtracting on a number line.

3. Let’s Review Number Line 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 More Less

4. A Common Misunderstanding You can’t skip any numbers on a number line. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

5. A Common Misunderstanding 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 0 5 10 15 20 25 56 78 99 0 1

6. Core Lesson Matt was making a clay vase in art. He decided to paint it three different colors. He painted the bottom 12 inches red, the middle 7 inches yellow, and the top 14 inches green. How tall is the clay vase? What am I trying to figure out? What do I know? Matt was making a clay vase in art. He decided to paint it three different colors. He Matt was making a clay vase in art. He decided to paint it three different colors. He painted the bottom 12 inches red, the middle 7 inches yellow, and the top 14 inches green. How tall is the clay vase? ?

7. Core Lesson Matt was making a clay vase in art. He decided to paint it three different colors. He painted the bottom 12 inches red, the middle 7 inches yellow, and the top 14 inches green. How tall is the clay vase? 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 14 = 10 + 4 12

8. Core Lesson 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 12 12 + 7 + 14 = ? 33 The vase is 33 inches tall.

9. Core Lesson A zookeeper measured two birds. One bird measured 39 cm and the other measured 61 cm. What was the difference in length between the two birds? A zookeeper measured two birds. One bird measured 39 cm and the other measured 61 cm. What was the difference in length between the two birds? ? What am I trying to figure out? What do I know?

10. Core Lesson A zookeeper measured two birds. One bird measured 39 cm and the other measured 61 cm. What was the difference in length between the two birds? 39 61 ? difference How can I find the difference between 39 and 61 ?

11. Core Lesson 22 39 61 10 2 61 - ? = 39 41 10 + 10 + 2 = 22 The difference between the birds is 22 centimeters. 51 10 61 - 22 = 39

12. In this lesson you have learned how to solve length word problems by adding and subtracting on a number line.