"Preliminary Understanding of Multiplication" Multiplication in Tables PPT Courseware 7

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"Preliminary Understanding of Multiplication" Multiplication in Tables PPT Courseware 7

Oral arithmetic:

7+8= 3+3=

6+9+5= 4+4+4=

7+2+6+1= 5+5+5+5=

1+2+3+4+5= 2+2+2+2+2=

Which of the following calculations can be directly rewritten as a multiplication calculation? Write it out.

5+5 7+7+6 3+3+3+3+3

4+4 6+6+6 3+2+2+2

Only by finding the sum of several identical addends can we use multiplication.

If it is correct or incorrect, mark √ if it is correct and × if it is wrong.

1. The product of 5+5 is 10 ( )

2. The addition of two 6s can be expressed as 6×2 ( ) using the multiplication formula

3. One factor is 5, the other factor is 3, and the product is 8 ( )

4. 2+4+5 cannot be changed into a multiplication formula. ( )

You come to be a teacher

1. 2+2+2 is represented by multiplication: 2×2×2 ( )

2. 4+4+4 is represented by multiplication: 4×3 or 3×4 ( )

3. 9+9+9+9 is represented by multiplication: 9×3 or 3×9 ( )

4. 4 + 4 + 3 is represented by multiplication: 4×3 or 3×4 ( )

5. A+A+A+A+A is represented by multiplication: A×5 or 5×A ( )

fill in the blank:

Viewed horizontally, there are ( ) rows of ( ) in each row, and there are ( ) ( ).

Viewed vertically, each column has ( ), and there are ( ) columns, which are ( ) ( ).

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Update Time: 2024-07-06

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