FRACTIONS. If you eat 9/12 from one candy bar and eat 4/12 from the other candy bar, how much did you eat altogether?

Transcription

1 Brain Pop Add & Subtract Fractions: Like Denominators Title: Add and Subtract Fractions (Like Denominators) Time: minutes Grade: th Mathematics Objective: SWBAT NJCCCS:. Warm Up Cake Warm Up You are having a birthday party and order ice cream cakes and cut them into pieces. At the end of the party one cake has pieces left while the other cake has left. Cake ) How much cake do you have left over from the party? FRACTIONS FRACTIONS If you eat / from one candy bar and eat / from the other candy bar, how much did you eat altogether?

2 Adding & Subtracting Fractions (Like Denominators) When the denominators are the same, ) Add/Subtract the numerators ) Write the sum/difference over the same denominator. )Reduce the fraction to its lowest term 0 _ 0 : Adding Proper Fractions Add the following fractions: 0 0 Practice: Word Problems Practice: Word Problems Practice: Word Problems Homework! ) Page # ) OE # ) Study for QUIZ!!

3 Add & Subtract Fractions: Unlike Denominators Warm Up Jose ate / of a Herseys bar and / of a Kit Kat bar. How much candy did he eat altogether? Title: Add and Subtract Fractions (Unlike Denominators) Time: minutes Grade: th Mathematics Objective: SWBAT Add and subtract fractions with different denominators NJCCCS:..A. Warm Up Mark'ee has / of Gatorade left in his bottle. If he drinks / of the Gatorade in the bottle at practice, how much is left? Warm Up How do you add these two fractions? Before After How do you subtract these two fractions? 0 0 Now, how do you think we add fractions with different denominators? Warm Up Adding & Subtracting Fractions (Unlike Denominators) Steps: ) Multiply numerator and denominator by same number to write a common denominator ) Add/Subtract new fractions ) Simplify? What you do to the top, you must do to the bottom?

4 Add & subtract the following fractions: Adding & Subtracting Fractions (Unlike Denominators) Adding & Subtracting Fractions (Unlike Denominators) Add & subtract the following fractions: ) ) 0 ) ) It rained inch yesterday and 0 inch today. How much more did it rain yesterday? Mixi spent hour doing his history homework and hour doing her science homework. How much total time did she spend doing homework? It rained inch more yesterday. She spent hours doing homework.

5 Cool Down On the postit create fraction problem with uncommon denominators on your postit. Switch the postit with your partner and solve their problem. Place it on the door before you leave class HOMEWORK ) Pg. # ) OE # Mixed Numbers Title: Adding and Subtracting Mixed Numbers Grade: th Subject: Mathematics Duration: 0 minutes Objective: SWBAT Add and Subtract Mixed Numbers with same and different denominators NJCCCS:..B. Warm Up Mike had Hersey bars before lunch. At lunch he ate pieces of chocolate. How much candy does he have left? ADD & SUBTRACT (like denominators) To add or subtract mixed numbers with like denominators, we follow these steps. ) Add or subtract the fractions. ) Add or subtract the whole numbers. ) Simplify if necessary.

6 ) 0 0 Add or subtract. Write your answer in simplest form. ) 0 ADD & SUBTRACT (unlike denominators) To add or subtract mixed numbers with unlike denominators, we follow these steps. ) Rewrite fractions with common denominators ) Add or subtract fractions. ) Add or subtract whole numbers. ) Simplify if necessary. ) ) ) ) ) Add or subtract. Write your answer in simplest form. ) At track practice, you run ½ miles. You cool down by walking a distance of miles. What is your total distance? ) ) During a bike ride Juan drank bottles of spring water. Kevin drank 0 of the same size bottles. Who drank more water? How much more? A rectangle is ½ inches long. Its width is / inches less than its length. Find the perimeter of the rectangle.

7 Homework ) Worksheet ) OE # Mixed Numbers Title: Subtracting Mixed Numbers Grade: th Subject: Mathematics Duration: 0 minutes Objective: SWBAT Subtract Mixed Numbers with same and different denominators by regrouping NJCCCS:..B. SUBTRACT Subtracting and Regrouping: Common Denominators Can we subtract these two Problem: numbers by using You can't subtract the previous from method? What to do? You have to do REGROUPING (Rewrite the upper fraction) and then subtract If the numerator is smaller in the first fraction we need to BORROW from the whole number... ) Rewrite fractions with common denominators ) Borrow: subtract from the whole number & add the denominator to the numerator. ) subtract the fractions. ) subtract whole numbers. ) Simplify Move box to reveal

8 ) 0 0 Subtract. Write your answer in simplest form. BORROW!!! ) 0 Practice Trick: * Cross whole # * Add numerator and denominator ) SUBTRACT If we subtract a whole number from a mixed number we need to BORROW from the whole number to make a fraction... ) Borrow: subtract from the whole number & write the same the denominator from the other fraction. ) subtract the fractions. ) subtract whole numbers. ) Simplify ) 0 Subtract. Write your answer in simplest form. BORROW!!! ) 0 ) ) ) Practice Trick: * Cross whole # * Create a new fraction Homework ) Worksheet ) OE #

9 Mixed Numbers Subtracting and Regrouping: Different Denominators Title: Subtracting Mixed Numbers Grade: th Subject: Mathematics Duration: 0 minutes Objective: SWBAT Subtract Mixed Numbers with same and different denominators by regrouping NJCCCS:..B. SUBTRACT Practice If the numerator is smaller in the first fraction we need to BORROW from the whole number... ) Rewrite fractions with common denominators ) Decide whether you have to borrow or not. ) subtract the fractions. ) subtract whole numbers. ) Simplify Subtract. Write your answer in simplest form. BORROW!!! Subtract. Write your answer in simplest form. BORROW!!! ) 0 ) ) )

10 SUBTRACT SUBTRACT Alex ran ½ miles. Kem ran / miles. Who ran more? How much more did she run? SUBTRACT Homework ) Page # ) OE # Fractions Choice Project Fractions Unit Title: Adding and Subtracting Fractions Choice Project Grade: th Subject: Mathematics Duration: 0 minutes Objective: SWBAT Add/Subtract fractions and mixed numbers with different denominators NJCCCS:..A. 0

11 Interactive Math Questions Brain Pop Activity