"Four Mixed Operations with Decimals" PPT Courseware 2

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"Four Mixed Operations with Decimals" PPT Courseware 2

Do vertical calculations to see who is right and fastest.

① 7. 4＋21.72 ② 50.43－25.8

③ 1.5×0.8 ④ 0.36÷1.2

The order and method of the four mixed operations of integers:

1. Addition and subtraction are called ( ) operations; multiplication and division are called ( ) operations.

2. In a calculation, if it only contains operations of the same level, ( ) must be calculated sequentially.

3. In a calculation, if it contains two levels of operations, the ( ) operation must be performed first, and then the ( ) operation.

4. In a calculation, if there are parentheses, ( ) must be calculated first, and then ( ) and ( )

Use 20 yuan to buy 3 notebooks and 1 pen. Each notebook is 3.5 yuan and each pen is 6.3 yuan. How much yuan is left?

【Option One】:

1. How much does it cost to buy 3 laptops?

3.5×3=10.5 (yuan)

2. How much yuan will you have left after buying 3 laptops?

20-10.5=9.5 (yuan)

3. After using the remaining money to buy another pen, how many yuan will be left?

9.5-6.3=3.2 (yuan)

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For more information about the "Mixed Operations with Four Decimals" PPT courseware, please click the "Mixed Operations with Four Decimals" ppt tag.

"Four Mixed Operations with Decimals" PPT courseware 3:

"Mixed Operations on Decimals" PPT Courseware 3 Learning Objectives 1. Knowledge objectives: Combined with specific situations, understand the connection and difference between the mixed operations on decimals and the four mixed operations on integers. 2. Ability goal: Master the order of the four mixed operations of decimals, and be able to perform decimals correctly..

"Four Mixed Operations with Decimals" PPT courseware:

"Four Mixed Operations with Decimals" PPT courseware preview outline: 1. Read the information window on page 45. What mathematical questions can you ask? Can you solve it? 2. Find the average number of immigrants in each phase of the third and fourth phases: how many thousand people? How do you think? How many algorithms are there? 3. Let’s talk about the belt...

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Update Time: 2024-11-22

This template belongs to Mathematics courseware Western Normal University Edition Fifth Grade Mathematics Volume 1 industry PPT template

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