"Multiplication Table of 9" Multiplication Table PPT Free Courseware

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"Multiplication Table of 9" Multiplication Table PPT Free Courseware

Part One: Introduction to the topic

I am very happy to be able to study with the children today. The teacher also brought a scene from the dragon boat race during the Dragon Boat Festival.

Can you ask math questions based on the pictures?

There are 9 people in 1 boat. How many people are in 2 boats? (9+9=18 people)

9 multiplication table PPT, part 2 content: new teaching knowledge

1. Independent cooperation and exploration of meaning

How many steps does a kangaroo make?

Qiqi jumps one step to 9.

How much does it take to jump two steps? How did you get it?

Qiqi's two-step jump is 18, 9+9=18.

How to formulate a 9?

1×9=9, one nine equals nine.

How many steps does it take to jump 3, 4...9 steps?

Can you first write the multiplication formula according to each step of the kangaroo's jump, and then make up the multiplication formula? Give it a try!

1x9=9, 2x9=18, 3x9=27, 4x9=36, 5x9=45, 6x9=54, 7x9=63, 8x9=72, 9x9=81.

One nine makes nine, two ninety eight, three nine twenty seven

Four nine thirty-six, five nine forty-five, six nine fifty-four

Seventy-nine sixty-three, eighty-nine seventy-two, ninety-nine eighty-one.

2. Explore the rules and memorize formulas

Do you want to know that there are many secrets hidden in the multiplication formulas and calculations of 9? Then let’s look for it together!

The difference between each adjacent formula is 9; the tens digit of the product is successively larger by 1, and the ones digit is smaller by 1; in two of the sentences, the ones and tens digits of the product are exactly reversed; the sum of the tens and ones digits of the product is 9... ….

9 multiplication table PPT, the third part: knowledge sorting

Knowledge points: The multiplication formula of 9, one nine is 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 and eighty-one.

【Example】Fill in “+” or “-” in ○.

9×5＝9×4○9

9×5＝5×8○5

Summary: To solve this kind of problem, you can use the meaning of multiplication to solve it. In fact, it is a way for us to memorize multiplication tables, generally called the association method. If you don’t remember Wujiu ( ), you can think of Wujiu thirty-six. Wujiu has one more 9 than Wujiu. That is, 36 plus 9 equals 45, so Wujiu forty-five.

9 multiplication table PPT, part 4 content: classroom exercises

1. Bumper cars.

Three ( ) twenty-seven ( ) nine sixty-three

Twenty-nine ( ) ( ) eighty-one

( ) × 9 = 72 | 9 × ( ) = 27

7×（　）＝63 5×（　）＝45

( ) × ( ) = 36 ( ) × ( ) = 18

2. Think about it and do it.

9×4+9= 6×7+7= 8×7+8=

6×9+9= 3×9+9= 5×7+7=

9×8+9= 9×5+9= 9×2+9=

3. There are 40 children in our class. Each dragon boat can only seat 9 people. How many dragon boats are needed?

Because 4×9=36 and 5×9=45, 5 boats are needed.

4. Look at the pictures and use multiplication formulas to explain the meaning.

9 multiplication table PPT, part 5: homework

1. Supplement the formula and write two multiplication equations based on the formula.

Twenty-nine ( ) Four-nine ( ) Eight ( ) Seventy-two

( ) Ninety-five-four ( ) Ninety-forty-five ( ) Ninety-sixty-three

2. Oral calculation.

9×3＝ 9×6= 9×2= 4×9=

9×1= 9×4= 9×9= 5×9=

8×9= 6×9= 9×5= 9×1=

7×9= 2×9= 3×9= 9×8=

3. Fill in the blanks.

(1) The multiplication formula written as 9+9+9+9+9+9 is ( ) or ( ).

(2) 2×9 is read as ( ), which means there are ( ) and ( ) added together.

(3) When three 9s are added together, the formula written is ( ).

(4) 9×5+9= ( ) 9×3-9= ( )

9 multiplication table PPT, part 6: expand and improve

1. Fill in ">", "<" or "=".

5×9�40 4×6�20+2 2+2�2×2

6×7�42 8+2�3×5 8×2�8+2

5×7�30 9+1�9×1 7×7�7+7

2. Solve the problem.

(1) Xiaohua has 9 two-yuan bills. How many yuan does he have in total?

(2) The school bought 9 movable red flags, each costing 6 yuan. How much did it cost in total?

(3) Each dining table in the school can seat 4 children. Children in the kindergarten class can sit on exactly 9 dining tables. How many children are there in the kindergarten class?

Keywords: Free download of PPT courseware for second-grade mathematics from the People's Education Press, download of 9-fold multiplication formula PPT, download of multiplication in tables PPT, .PPT format;

For more information about the PPT courseware "Multiplication Formulas for Multiplication 9 in Tables", please click the Multiplication Formulas PPT tab for Multiplication Tables PPT9.

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Update Time: 2024-09-07

This template belongs to Mathematics courseware People's Education Press Second Grade Mathematics Volume 1 industry PPT template

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