Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom
GeoGebra

Fractions and Decimals

作者：Melissa Ann Clark, Jesus Perez, Kiri Hayman, Duane Habecker

Lesson Objective:

Students will be able to add, subtract, multiply, and divide fractions and decimals.

Student-Facing Learning Target:

I can add, subtract, and multiply fractions and decimals.

Vocabulary:

1.) Fraction: part of a whole or a set 2.) Numerator: the top part of the fraction; the number of pieces being counted 3.) Denominator: the bottom part of the fraction; the total number of pieces of the whole or the set 4.) Common Denominator: the denominator needed to add and subtract fractions together

Part One: Comparing Fractions and Decimals

When converting fractions to decimals, you divide the denominator by the numerator. Example: 11/100 = 100 divided by 11 = 0.11 When converting decimals to fractions, you put the number after the decimal in the numerator and then which decimal place in the denominator Example: 0.11 = 11/100

Exercise 1:

Use <, >, or = to compare the following

1. 0.8 ___________ 0.45

核對我的答案

2. 4/6 _____________ 2/3

核對我的答案

3. 1/2 ______________ 0.75

核對我的答案

Part Two: Fraction Word Problems

1. Kim rode her bike for one-fifth of a mile on Monday and two-fifths of a mile on Tuesday. a.)How many miles did she ride altogether?

核對我的答案

b.)On Wednesday, she rode on half of a mile. If she does that every day for 4 day, how far did she ride her bike?

核對我的答案

2. Jake needs to walk 7/10 kilometers to school. He has already walked 3/10 kilometer. a.) How much further does Jake need to walk?

核對我的答案

b.) After school, Jake had to stop by the bookstore. The bookstore is one-fifth of a kilometer from school. What is the total distance Jake will walk after going to school and then the bookstore?

核對我的答案

3. There was 5/8 of a pie left in the fridge. Daniel at 1/4 of the leftover pie. How much pie is left over?

核對我的答案

Part Three: Decimals Word Problems

When adding/ subtracting decimals, you line up the decimal points and add zeros to any missing spots AFTER the decimal point. When multiplying decimals, you line up the numbers against "the wall" and multiply like usual; then count how many total decimal places are there in the two numbers.

1. Brenda and Jenna together saved $12.75 last week and $8 this week to buy a gift for Mother's Day/ a.) The gift they want to buy costs $17.50. Do the sisters have enough money for the gift?

核對我的答案

b.) If the sisters want to split the cost of the gift, how much should each pay?

核對我的答案

c.) Brenda also wants to buy 5 chocolate bars for their mom. Each chocolate bar cost $0.95. How much total money does she need for the chocolate?

核對我的答案

2. Becca is biking across the country over her summer break. a.) She biked 47.5 miles everyday Monday through Friday. How far did she bike?

核對我的答案

b.) She biked 12 miles on Saturday and 9 miles on Sunday. What is the total distance Becca biked this whole week?

核對我的答案

Comparing and Ordering Decimals

Lesson 2 PP.pdf

Lesson 2 PP.pdf

Comparing and Ordering Fractions and Decimals

Lesson 2 PP2.pdf

Lesson 2 PP2.pdf

最新資源

探索資源

探索主題