"Continuous Division" Divide three-digit numbers by two-digit numbers PPT courseware

Description

"Continuous Division" Divide three-digit numbers by two-digit numbers PPT courseware

teaching objectives

1. Experience the process of solving problems with your own methods and rewriting step-by-step calculations into continuous division formulas.

2. Combine with specific examples, understand the order of operations of continuous division, and be able to perform continuous division operations correctly.

3. Gain successful experience and experience the diversity of algorithms in independent problem-solving activities.

Grandpa Wang’s four cows produce 448 kilograms of milk every week.

Observe the situation diagram and talk about what mathematical information you discovered and the problems you want to solve?

method one

448÷7＝64(kg)

64÷4＝16(kg)

Method Two

448÷4＝112(kg)

112÷7＝16(kg)

Think about it, can we put the two calculations of method 1 and method 2 into one calculation? How to formulate a calculation?

practice

1. Let’s talk about the order of operations first, and then calculate.

840÷8÷5 280+378÷6 864÷（61－53）

31×3×46 520-42×12 (408-103)÷5

2.4 vehicles transported 960 bags of cement three times. How many bags of cement does each vehicle transport on average?

960÷4÷3

=240÷3

＝80(bag)

Answer: On average, each vehicle transports 80 bags of cement each time.

3. The fourth grade students were divided into 3 groups to water trees, and a total of 864 trees were watered. How many trees does each person water on average?

864÷3÷8＝36 (trees)

Answer: On average, each person waters 36 trees.

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Update Time: 2024-11-19

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

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