"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware

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"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware

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"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware

There are 30 rows of apple trees in the orchard, with 400 apple trees in each row. How many apple trees are there in the orchard?

400×30=12000

To multiply whole hundreds by whole tens, first multiply the numbers that are not 0 in the factors, and then add all the 0s in the factors after the multiplication result.

400×3=1200

1200×10=12000

4×3=12

12×1000=12000

Calculate verbally first, and then explain how to calculate.

60×700=42000 150×30

6×7=42

42×1000=42000

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For more information about the PPT courseware "Oral Calculation and Estimation of Multiplication of Three-Digit Times by Two-Digit Numbers", please click the Oral Calculation and Estimation of Multiplication of Three-digit Numbers by Two-Digit ppt ppt tag.

"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware 2:

"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware 2 Teaching objectives In this lesson, we mainly learn the oral calculation and estimation of multiplication. Students must master the method of oral arithmetic and correctly calculate two-digit multiplication orally; master estimation. method to correctly estimate two numbers..

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Update Time: 2024-11-19

This template belongs to Mathematics courseware Western Normal University Edition Fourth Grade Mathematics Volume 1 industry PPT template

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"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware
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