"Understanding of Numbers Within 10,000" PPT on Understanding Numbers Within Ten Thousands

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"Understanding of Numbers Within 10,000" PPT on Understanding Numbers Within Ten Thousands

Part One: Introduction to the topic

Count one by one, 10 to one is ten.

Counting ten to ten, 10 tens is one hundred.

Counting one hundred and one hundred, 10 hundred is one thousand.

10 1s is 10, 10 10s is 100, 10 100s is 1000, what is 10 1000?

PPT on understanding numbers within 10,000, part 2: new teaching knowledge

One thousand, two thousand, three thousand, four thousand, five thousand, six thousand, seven thousand, eight thousand, nine thousand, ten thousand.

Understanding of numbers within a thousand

10 ones are ten

10 tens is one hundred

10 hundred is one thousand

10 thousand is ten thousand

Knowledge points

1. Use small cubes, counters, colored stars, etc. to experience the counting process and understand the counting unit "ten thousand".

2. Use life situations to understand the connection between mathematics and life, and stimulate students' emotions to actively participate.

PPT on understanding numbers within 10,000, the third part: knowledge sorting

Knowledge point 1: The counting units we already know are: ones, tens, hundreds, thousands, and ten thousand. 10 thousandths are ten thousand, and there are 10 thousandths in ten thousand.

【Example】There are ( ) 1000s and ( ) 100s in 10000.

[Analysis] The number of one thousand, 10 thousand is 10000, so there are 10 1000 in 10000. There are 10 100s in a thousand miles, and 20 100s in 2,000 miles. In the same way, there are 30 100s in three thousand miles, 90 100s in nine thousand miles, and 100 100s in 10,000 miles.

[Method summary] There are 10 thousand in ten thousand, 10 hundred in one thousand, 10 tens in one hundred, and 10 ones in ten, so it is called the decimal counting method.

[Small exercise]

1. In the integer part, the first digit from the right is ( ), and the counting unit is ( ); the ( ) digit is the thousand digit, and the counting unit is ( ).

2. When counting, when the ones digit reaches ten, advance one to the ( ) digit. When the tens digit reaches ten, advance one to the ( ) digit. When the hundreds digit reaches ten, advance one to the ( ) digit. Ten will advance one to ( ).

3. The number of one thousand and one thousand, the five numbers after 4050 are ( ), ( ), ( ), ( ), ( ).

Knowledge point 2: Numbers within ten thousand are composed of thousands, hundreds, tens and tens. The number in the thousands place means thousands, the number in the hundreds place means hundreds, and the number in the tens place means tens. The number in the position indicates the number.

[Example] 4080 is composed of ( ) thousand and ( ) tens; 4800 is composed of ( ) ( ) and ( ) ( ).

[Analysis] The thousands place of 4080 is 4, which means 4 thousands, the tens place is 8, which means 8 tens, and the remaining digits are 0, which means there is no counting unit. The thousands place of 4800 is 4, which means 4 thousands, and the hundreds place is 8, which means 8 hundreds.

[Method Summary] Which digit of a number is on indicates how many such counting units there are. Conversely, if there are several counting units, write the number on the corresponding digit.

PPT on understanding numbers within 10,000, Part 4: Classroom exercises

1. Fill it out.

(1) ( ) ten is one hundred, and 10 one hundred is ( ).

(2) 408 is composed of ( ) hundreds and ( ) ones; 480 is composed of ( ) ( ) and ( ) ( ).

2. count. Starting from eight hundred and eighty, count eleven to one thousand.

Reference answer: 880 890 900 910 920 930 940 950 960 970 980 990 1000.

3. Think: What are the counting units larger than "thousand"?

Reference answers: ten thousand, one hundred thousand, etc.

2. Try to practice, dial 2580 on the counter, and talk about its composition.

PPT on understanding numbers within 10,000, Part 5: After-class exercises

1. Fill in the blanks.

(1) There are ( ) 1s, ( ) 10s, ( ) 100s, and ( ) 1000s in 10000.

(2) The numbers adjacent to 7800 are ( ) and ( ).

(3) There are ( ) thousand, ( ) hundred, ( ) tens and ( ) one in 1459.

(4) The number composed of 3 thousand, 5 hundreds and 6 ones is ( ).

(5) The number composed of 8 thousand and 7 hundreds is ( ).

(6) The four-digit numbers with the same number in each digit are ( ), ( ), ( ), ( ), ( ), ( ), ( ), ( ), ( ).

(7) In the digit sequence table, the first digit from the right is the ( ) digit, the ( ) digit is the tens digit, the hundreds digit is the ( ) digit, the fourth digit is the ( ) digit, and the ten thousand digit is the ( ) digit. Bit.

2. Fill in the appropriate numbers in the brackets.

483=( )+( )+( );

7243=( )+( )+( )+( );

1008=( )+( );

407=( )+( );

510=( )+( );

814=( )+( )+( ).

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Update Time: 2024-11-17

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