"Interconversion of Fractions and Decimals" PPT teaching courseware on the meaning and properties of fractions

Description

"Interconversion of Fractions and Decimals" PPT teaching courseware on the meaning and properties of fractions

Part One: Learning Objectives

1. Understand and master the method of converting decimals into fractions, and be able to skillfully convert decimals into fractions.

2. Understand and master the method of converting fractions into decimals, and be able to skillfully convert fractions into decimals.

focus

Understand and master the methods of converting decimals into fractions and fractions into decimals.

difficulty

Be able to skillfully convert fractions and decimals into each other.

Interconversion of fractions and decimals PPT, part 2: review

fill in the blank.

(1) 0.6 means ( ) divided by ( ). 0.09 means ( ) divided by ( ).

(2) 0.5 means ( ) divided by ( ), written as ( ).

(3) There are ( ) thousandths in 0.006, which means ( ) divided by ( ), and the fraction is ( ).

Interconversion of fractions and decimals PPT, part 3: interpretation of examples

A 3 m long rope is divided into 10 equal parts. How many meters long is each part? What if it is divided equally into 5 segments?

Method 1: 3÷10=0.3 (m)

Method 2: 3÷10=3/10 (m)

How can I convert decimals into fractions faster?

Decimals represent numbers such as tenths, hundredths, thousandths, etc., so they can be directly written as fractions whose denominators are 10, 100, 1000,... and then simplify.

Interconversion of fractions and decimals PPT, Part 4: Summary

How to convert decimals into fractions

Decimals represent numbers in tenths, hundredths, thousandths, etc., so they can be written directly as fractions with denominators 10, 100, 1000,..., and anything that can be reduced should be reduced to the simplest form. Fraction.

How to convert fractions into decimals

Utilizing the relationship between fractions and division, directly divide the numerator by the denominator. If the division cannot be completed, use the "rounding" method to retain as many decimal places as necessary. Generally, two decimal places are retained unless there are special requirements.

PPT on the exchange of fractions and decimals, part 5: quiz in class

1. Which two gloves are a pair, connected together.

2. Are the following decimal fractions correct?

3. I type an average of 0.9 words per second.

I typed 50 words in 1 minute, averaging 5/6 words per second.

Who type faster, Aunt Li or Uncle Wang?

Method 1: 0.9 ×60=54 (pieces) 54 > 50

Method 2: 5/6=5÷6≈0.83 (piece) 0.9 >0.83

Interconversion of fractions and decimals PPT, Part 6: Homework

1. Choose from the after-class exercises

Keywords: Free download of PPT courseware for mathematics in the second volume of the fifth grade of the People's Education Press, PPT download of the mutual conversion of fractions and decimals, PPT download of the meaning and properties of fractions, .PPT format;

For more information about the PPT courseware "The Meaning and Properties of Fractions and the Interconversion of Fractions and Decimals", please click on the "The Meaning and Properties of Fractions PPT Interconversion of Fractions and Decimals" PPT tag.

"Interconversion of Fractions and Decimals" PPT download of the meaning and properties of fractions:

"Interconversion of Fractions and Decimals" The meaning and properties of fractions PPT download Learning objectives 1. Understand and master the method of converting decimals into fractions, and be able to skillfully convert decimals into fractions. (Key points) 2. Cultivate the ability to apply mathematical knowledge to solve problems. (difficulty) ... ... ..

"Interconversion of Fractions and Decimals" The meaning and properties of fractions PPT:

"Interconversion of Fractions and Decimals" The meaning and properties of fractions PPT Part 1: Exciting introduction Fill in the blanks: 1. There are ( ) tenths in 0.5, which means ( ) divided by ( ). 2. There are ( ) one hundredths in 0.23, which means ( ) divided by ( ..

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Update Time: 2024-07-05

This template belongs to Mathematics courseware People's Education Press Fifth Grade Mathematics Volume 2 industry PPT template

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