| Category | Format | Size |
|---|---|---|
| Western Normal University Edition Fourth Grade Mathematics Volume 1 | pptx | 6 MB |
"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware
Description
"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 Courseware.
"Oral Calculation and Estimation" Multiplication of three-digit numbers by two-digit numbers PPT courseware 2:
"Oral Calculation and Estimation" Three-digit Multiplication by Two-Digit 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 calculation and correctly calculate two-digit multiplication orally; master estimation. method to correctly estimate two numbers..
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Update Time: 2024-07-03
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