"Problem Solving" PPT Courseware 5

Description

"Problem Solving" PPT Courseware 5

Learn important and difficult points

Key points: Understand and master the order of operations of mixed multiplication and division operations, and be able to correctly calculate the two-step operations of mixed multiplication and division.

Difficulty: Use different problem-solving strategies to solve practical problems.

Mixed multiplication and division operations

In mixed operations of multiplication and division, if there are parentheses, the items inside the parentheses must be calculated first; if there are no parentheses, calculations must be made from left to right.

Equivalent substitution method

Equivalent substitution method refers to using one quantity (or part of a quantity) to replace another quantity (or part of another quantity) that is equal to it.

Mixed multiplication and division operations

How much do a pair of shoes and a sweater cost?

Analysis: 3 pairs of shoes + 4 sweaters = 500 yuan

6 pairs of shoes + 6 sweaters = 3 pairs of shoes + 4 sweaters + 3 pairs of shoes + 2 sweaters = 840 yuan

500 yuan + 3 pairs of shoes + 2 sweaters = 840 yuan

3 pairs of shoes + 2 sweaters = 840 yuan - 500 yuan = 340 yuan

2 sweaters = 500 yuan - 340 yuan = 160 yuan

1 sweater = 160 yuan ÷ 2 = 80 yuan

1 pair of shoes = (500-80×4) ÷ 3 = 60 yuan

Keywords: problem-solving teaching courseware, Hebei Education Edition fourth-grade mathematics PPT courseware download, fourth-grade mathematics slide courseware download, problem-solving PPT courseware download, .PPT format;

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"Problem Solving" PPT courseware download:

"Problem Solving" PPT courseware download Part One: New Lesson Introduction The hare and the tortoise are racing. The distance from the starting point to the end is 450 meters. Who will reach the end first? How early should I arrive? I run 5 meters per minute. I run 5 meters more per minute than the turtle. The tortoise and the hare..

"Problem Solving" PPT download:

"Problem Solving" PPT download Part 1: Concise explanation of classic questions 1) Do the math yourself: How much is the price reduction for each piece of clothing? The price of the wool sweater is reduced by 145 yuan, 525-380=145 (yuan). The price of the down jacket of 560 yuan is reduced by 162 yuan, 560-398=162 (yuan). What about the other items? ..

"Problem Solving" PPT:

Contents of the first part of "Problem Solving" PPT: Learning objectives 1. Understand the meaning of integer division; 2. Understand division with remainders; 3. Master the relationship between the various parts of division with remainders; 4. Cultivate analysis, judgment and logical reasoning Ability and ability to solve practical problems...

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Update Time: 2024-11-21

This template belongs to Mathematics courseware Hebei Education Edition Fourth Grade Mathematics Volume 1 industry PPT template

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