"Reading and Writing of Decimals" PPT courseware on the meaning and properties of decimals

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"Reading and Writing of Decimals" PPT courseware on the meaning and properties of decimals

1. Understand the counting units and digits of decimals

(1) Recognize the digits of decimals - tenth place

Questions: 1. Find the fraction from this picture and rewrite it as a decimal.

2. If you start counting from 0.1, how many such decimals can you count?

3. What is the digit after the decimal point called?

Monitoring: tenth place, counting unit is 0.1.

(2) Understand the decimal places - percentile

Questions: 1. Find the fraction from this picture and rewrite it as a decimal.

2. What is the second digit after the decimal point called?

Monitoring: Percentile, the counting unit is 0.01.

2. In-depth understanding of numbers

(1) Situation in which sample questions are presented

(2) Study the significance of numbers

Questions: 1. Introduce the units digit and its counting unit, and talk about what it represents.

2. Can you tell me what the other digits represent like this?

3. Talk about what 12.378 is composed of.

3. Consolidate practice

1. Do it.

2.83 is composed of ( ) ones, ( ) tenths and ( ) one hundredths.

2. Write the meaning of “2” in each of the following numbers.

20.04( )5.42( )0.25( )0.672( )

4. Assign homework

Homework: Exercise 9 on page 37, questions 8 and 9.

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Update Time: 2024-10-05

This template belongs to Mathematics courseware People's Education Press fourth grade mathematics volume 2 industry PPT template

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