"Understanding of Numbers" General Review PPT Courseware 2

Description

"Understanding of Numbers" General Review PPT Courseware 2

teaching objectives

1. Consolidate and deepen the understanding of the knowledge learned, communicate the internal connections between various parts of knowledge, and systematize the knowledge learned.

2. Again realize the necessity of introducing fractions and decimals, and communicate the connection between fractions and decimals.

3． Understand the meaning of fractions from multiple perspectives and feel the relationship between fractions, division, and ratios.

4. Understand the connection between knowledge and life, enhance the awareness of applied mathematics, and appreciate the charm of mathematics.

1. Natural numbers, 0 and integers

When counting objects, 0, 1, 2, 3... used to express the number of objects are called natural numbers.

An object is not represented by 0.

0 is also a natural number.

0 and natural numbers are both integers.

Comparison of integer sizes

To compare the size of two multi-digit numbers, first look at the number of digits they have. The number with more digits is larger;

If the digits of two numbers are the same, then look at the highest digit first. If the number in the highest digit is larger, the number will be larger;

If the highest digits are the same, the number in the second digit on the left is larger, and the number is larger...

Comparison of fractions

For two fractions with the same denominator, the one with the larger numerator is larger.

For two fractions with the same numerator, the fraction with the smaller denominator is larger.

Common fractions: First find the lowest common multiple of the original denominators, and then convert each fraction into a fraction using the lowest common multiple as the denominator.

Reduction------Convert a fraction into a fraction that is equal to it, but whose numerator and denominator are both smaller.

Reduction method:

1. Use the common divisor of the numerator and denominator (except 1) to divide the numerator and denominator one by one until the simplest fraction is obtained.

2. Divide the numerator and denominator by their greatest common divisor.

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For more information about the PPT courseware "Understanding of Numbers Jiangsu Education Edition Primary School Mathematics Volume 2 General Review" PPT courseware, please click the "Understanding of Numbers ppt Jiangsu Education Edition Primary School Mathematics Volume 2 General Review ppt" tag.

"Understanding of Decimals" PPT:

"Understanding of Decimals" PPT Part One Content: New Lesson Introduction When people measure and calculate, the results they obtain are often not integers and are often expressed as decimals. The length of a skipping rope is 2 meters and 15 centimeters, which can be written as 2.15 meters. It costs a total of a bottle of drink and a piece of bread...

"Understanding, Reading and Writing of Numbers Within 100 Million" PPT courseware for understanding larger numbers:

"Understanding, Reading and Writing of Numbers Within 100 Million" Understanding Larger Numbers PPT Courseware Teaching Objectives 1. Combined with specific examples, experience the process of understanding digital tables and reading and writing numbers within 100 million. 2. Recognize the sequence of numbers within 100 million, know the meaning of the numbers in each digit, and be able to...

"Understanding, Reading and Writing Methods of Numbers Over Hundreds of Hundreds" PPT courseware for understanding larger numbers:

"Understanding, Reading and Writing Methods for Numbers Over One Hundred Million" Understanding Larger Numbers PPT Courseware Teaching Objectives 1. Combined with the population of our country, experience the process of recognizing numbers over one hundred million and understand the decimal counting method. 2. Understand the counting units such as billions, billions, tens of billions, and hundreds of billions and the numerical sequence table.

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Update Time: 2024-07-04

This template belongs to Mathematics courseware Jiangsu Education Edition Sixth Grade Mathematics Volume 2 industry PPT template

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