"Multiplication Table of 9" Multiplication in Tables and Division in Tables PPT Courseware 2

Description

"Multiplication Table of 9" Multiplication in Tables and Division in Tables PPT Courseware 2

1. Say the formula completely.

Twenty-eight ( ) Four-six ( ) Five-eight ( )

Sixty-eight ( ) Thirty-seven ( ) Thirty-eight ( )

Sixty-seven ( ) Five-seven ( ) Five-six ( )

2. Calculate orally and tell which formula you use.

8×8= 4×6= 7×5= 6×8=

5×8= 7×7= 8×4= 8×6=

Multiplication table

One by one gets one

One or two makes two. Two or two makes four.

One or three is three, two or three is six, three or three is nine.

One four is four, two four is eight, three forty two, four forty six.

One five gets five, two five ten, three fifty five, four five twenty, five five twenty five

One six makes six, two sixty two, three sixty eight, four six twenty four, five six thirty, six six thirty six

One seven makes seven, two seventy-four, three seven twenty-one, four seven twenty-eight, five seven thirty-five, six seven forty-two, seven seven forty-nine

One eight equals eight, two eighty six, three eight twenty four, four eight thirty two, five eight forty, six eight forty eight, seven eight fifty six, eight eight sixty four.

One nine makes nine, two ninety-eight, three nine twenty-seven, four nine thirty-six, five nine forty-five, six nine fifty-four, seven nine sixty-three, eight nine seventy-two, ninety-nine eighty-one.

Jiujiu Ge is the multiplication table we use now.

As far back as the Spring and Autumn Period and the Warring States Period BC, Jiujiu Song has been widely used by people. There are records about Jiujiu Ge in many works at that time. The original Jiujiu Song starts from "Nine Nine Eighty One" and ends with "Two Two Gets Four", with a total of 36 sentences. Because it starts from "Nine Nine Eighty-One", it is named Jiujiu Song. Later, the order of the Nine-Nine Songs became the same as what is used now, starting from "One One Gets One" to "Nine-Nine Eighty-One".

There are two types of multiplication tables used in our country, one is 45 sentences, usually called "Xiao Jiujiu"; the other is 81 sentences, usually called "Da Jiujiu".

Summary

There are 9 multiplication tables for 1 and 9. The difference in scores between two adjacent sentences is 9.

2. 1 times 9 is 1 less than 10, 2 times 9 is less than 20... 9 times 9 is 9 less than 90. That is, multiplying 9 and a few is equal to the difference of tens minus a few.

3. The sum of the tens digits and units digits of the product is 9.

4. For the product of the multiplication formula of 9, the units and tens digits of the product in the corresponding positions have exchanged positions, for example, two hundred and ninety-eight, ninety-nine and eighty-one, 18, and 81.

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For more information about the PPT courseware "9's Multiplication Table Multiplication and Table Division" PPT courseware, please click on the 9's Multiplication Table ppt Multiplication and Table Division ppt tag.

"Using the multiplication formula of 9 to find the quotient" PPT courseware on multiplication and division in the table:

"Using the Multiplication Formula of 9 to Find the Quotient" Multiplication and Division PPT Courseware in Tables Teaching Objectives 1. Combined with specific examples, experience the process of using the multiplication formula of 9 to independently solve simple problems in life. 2. Be able to use the multiplication formula of 9 to perform corresponding multiplication and division calculations relatively skillfully. 3...

"Multiplication Table of 9" PPT courseware for multiplication and division in the table:

"The Multiplication Formula of 9" Multiplication and Division PPT Courseware in the Table Teaching Objectives 1. Combined with specific examples, experience the process of independently trying to summarize the multiplication formula of 9. 2. Memorize the multiplication formula of 9, and be able to use the multiplication formula of 9 to perform corresponding multiplication calculations. 3. When writing formulas and explorations...

"Multiplication Table of 9" PPT Courseware for Multiplication in Tables 2:

"Multiplication Formula of 9" Multiplication in the Table PPT Courseware 2 One Nine Gets Nine 19= 9 91= 9 Two Nine Eight 29=18 92=18 Three Nine Twenty Seven 39=27 93=27 Four Nine Thirty Six 49= 36 94=36 five nine forty five 59=45 95=45 six nine fifty four 69=54 96=54 seven nine..

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Update Time: 2024-11-13

This template belongs to Mathematics courseware Jiangsu Education Edition Second Grade Mathematics Volume 1 industry PPT template

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