"Mathematics in Beer Production" PPT courseware 6

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"Mathematics in Beer Production" PPT courseware 6

1. Situation introduction

Speed: 100 kilometers/hour

Scale 1:8000000

How long does it take for the Young Eagle Youth Football Team to arrive in Qingdao?

What mathematical information do you know from the picture?

What questions can you ask based on this information?

2. Collaborative research

How long does it take for the Young Eagle Youth Football Team to arrive in Qingdao?

Time = distance ÷ speed

To request the time, you must first know how many kilometers the actual distance from Jinan to Qingdao is.

The distance between the two places is measured from the map to be 4 cm.

According to the distance on the map/actual distance = scale, we can give a proportional answer.

According to the meaning of the scale bar, 1 centimeter on the picture represents an actual distance of 8,000,000 centimeters.

Formulate the formula based on distance on the map ÷ scale bar = actual distance.

3. Independent practice

1. A model of the Leaning Tower of Pisa made at a scale of 1:100, with a height of 54.5 cm. What is the actual height of the Leaning Tower of Pisa?

Solution: Let the actual height of the Leaning Tower of Pisa be x centimeters.

54.5/x=1/100

x = 54.5×100

x = 5450

5450 cm = 54.5 meters

Answer: The actual height of the Leaning Tower of Pisa is 54.5 meters.

2. (1) In this picture, 1 centimeter represents the actual distance ( ) meters. When rewritten as a numerical scale, it is ( ).

(2) The distance between Wang Tao’s home and school is ( ) centimeters on the map, but the actual distance is ( ) meters.

(3) If Wang Tao walks 50 meters per minute, it will take him ( ) minutes to walk from home to the supermarket.

(4) Based on the diagram above, what other questions can you ask?

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Update Time: 2024-06-30

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