"Understanding of Numbers Within 1,000" PPT Download of Understanding Numbers Within Ten Thousands (Lesson 2)

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"Understanding of Numbers Within 1,000" PPT Download of Understanding Numbers Within Ten Thousands (Lesson 2)

Part One: Learning Objectives

1. Through counting activities such as counting dots, small sticks, and square wooden blocks, students can understand the composition of numbers within 1,000.

2. Enable students to initially understand the general rules of reading and writing numbers, and at the same time cultivate students' abstraction ability and number sense.

3. By understanding the data information in life, students can feel the widespread application of mathematics in life, appreciate the value of mathematics, and cultivate patriotism.

[Key Points] Correctly read and write numbers within 1,000.

[Difficulty] Understand the methods or essence of reading and writing numbers.

PPT on understanding numbers within 1000, part 2: classroom analysis

(1) Fill in

10 ones are ( ), 10 tens are ( ), and 10 hundreds are ( ).

(2) Count

1. Count 3 consecutive numbers after two hundred and eighty-six.

Two hundred and eighty-seven, two hundred and eighty-eight, two hundred and eighty-nine.

2. There are ( ) of these small cubes below.

Today we continue to learn about numbers within 1000.

The composition of numbers.

Two hundred is two hundred, and thirty-five combined is two hundred and thirty-five.

There are 10 in each column, 10 columns, 10 10 is 100, which is more than 100.

I'll circle 100 dots first.

Thirty-five dots remain.

Two hundred and thirty-five is composed of 2 hundreds, ( ) tens and ( ) ones.

Number reading and writing.

1 bead in the units position represents 1 one,

A bead in the tens place represents a tens.

1 bead on the hundreds place represents 1 hundred.

One bead on the thousands place represents one thousand.

From right to left on the counter are the units digit, tens digit, hundreds digit, and thousands digit.

Express two hundred and thirty-five on the counter.

When writing numbers, start from the high digit. If there are two hundreds, write 2 in the hundreds place. If there are three tens, write 3 in the tens place. If there are 5 ones, write 5 in the ones place.

When reading, read from the high digit, a 2 in the hundreds place is read as two hundred, a 3 in the tens place is read as thirty, and a 5 in the units place is read as five.

Reading and writing numbers start from the high position.

PPT on understanding numbers within 1000, part three: classroom exercises

1. Fill it out.

There are ( ) hundreds, ( ) tens and ( ) ones. This number is ( ).

2. Dial the following numbers on the counter first, and then write them out.

When writing a number, there is no unit on any digit, so use 0 as a placeholder.

3. Fill it out.

4. Color the three hundred and sixty-eight small squares.

5. Read and write.

(1) The price of a double-tub washing machine is 988 yuan.

(2) Run around the playground for four hundred meters.

(3) The book "Fables" has a total of 306 pages.

(4) Obviously walked 850 steps around the playground.

6. Read out each of the following numbers, and then talk about their composition.

867 people participated in the long-distance race.

eight hundred and sixty seven

It is composed of 8 hundreds, 6 tens and 7 ones.

There are 580 balloons.

five hundred and eighty

It is composed of 5 hundreds and 8 tens.

There are 208 pigeons in the square.

two hundred and eight

It is composed of 2 hundreds and 8 ones.

1. When writing a number, start from the highest digit. If there is no counting unit in any digit, just write 0 in that digit.

2. When reading, read from the highest digit. The number in the hundreds place is read as hundreds, the number in the tens place is read as tens, the number in the units place is read as a few, the 0 in the middle is read as zero, and the 0 at the end is not read. .

3. The composition of numbers: Look at the hundreds, tens, and ones digits of a number. The number is composed of the corresponding hundreds, tens, and ones.

Keywords: Free download of PPT courseware for mathematics in the second volume of the second grade of the People's Education Press, PPT download on the understanding of numbers within 1,000, PPT download on the understanding of numbers within ten thousand, .PPT format;

For more information about the PPT courseware "Understanding Numbers Within Ten Thousand and Understanding Numbers Within 1,000", please click on the Understanding Numbers Within Ten Thousand PPT. Understanding Numbers Within 1,000 PPT tag.

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Update Time: 2024-07-02

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