"Progress Rate Between Area Units" Area PPT Courseware

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"Progress Rate Between Area Units" Area PPT Courseware

Consolidate and review

1. What are the commonly used units of length? What is the rate of progress between two adjacent units of length?

2. What are the commonly used units of area?

There are square meters, square decimeters, square centimeters, and square millimeters.

Progress rate between area units

1 square meter = 100 square decimeters

1 square decimeter = 100 square centimeters

A square piece of paper with side length 1 decimeter. If it is divided into squares with a side length of 1 cm, how many squares can be divided?

What is its area in square centimeters?

do one do

The poster posted by the students is 18 decimeters long and 12 decimeters wide. What is the area of ​​the poster in square decimeters? Paste a lace around the wall poster. How many meters long is the side of the lace?

The area of ​​the poster is

18 × 12 = 216 (square decimeters)

The total length of the wall poster’s lace is

18＋12 +18+12＝60 (decimeter)

60 decimeter = 6 meters

Answer: The area of ​​the poster is 216 square decimeters, and the total length of the lace is 6 meters.

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Update Time: 2024-10-02

This template belongs to Mathematics courseware People's Education Press third grade mathematics volume 2 industry PPT template

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