1. Freddy had 2 candy bars. He promised his brother that he would give him 1 of his candy bars. How much will he have left after he gives his brother the amount he promised?

2. In this lesson you will learn how to estimate the reasonableness of answers to word problems with mixed- numbers by using models.

3. Let’s Review A model is a picture that represents a fraction. =

4. A mixed-number is when there is a whole number combined with a fraction. = 2

5. Core Lesson Reasonable means to be logical. Reasonable!

6. Freddy had 2 candy bars. He promised his brother that he would give him 1 of his candy bars. How much will he have left after he gives his brother the amount he promised? 1. Calculate2. Estimate3. Compare 1 3 2 1 6 1 - =1 1 6 candy bars

7. Core Lesson 2. Estimate 1 3 1 6 - 1 3 1 candy bars 2 1 0 0 Freddy had 2 candy bars. He promised his brother that he would give him 1 of his candy bars. How much will he have left after he gives his brother the amount he promised?

8. Core Lesson 3. CompareCalculatedEstimated How did we do? How did we do? Our answer is reasonable! 1313 candy bars 1 1 1 6

9. A Common Misunderstanding 2. Calculate candy bars It does not make sense! + Freddy had 2 candy bars. He promised his brother that he would give him 1 of his candy bars. How much will he have left after he gives his brother the amount he promised? 21 = C 3 X

10. Core Lesson Louis and his friend Mary planted sunflower seeds in class. Mary's flower grew 3 feet tall and Louis's flower grew 2 feet tall. How tall did both flowers grow altogether? 1. Calculate 2. Estimate3. Compare 3 2 + 5 = 6 = 6 ’

11. Core Lesson 2. Estimate + 2 3 7 4 3 feet Louis and his friend Mary planted sunflower seeds in class. Mary's flower grew 3 feet tall and Louis's flower grew 2 feet tall. How tall did both flowers grow altogether?

12. Core Lesson 3. Compare CalculatedEstimated How did we do? Our answer is reasonable! 6 feet 7

13. In this lesson you have learned how to estimate the reasonableness of answers to word problems with mixed- numbers by using models.