How to calculate the scale 2 methods, how to calculate the scale?

Scale bar = distance on the map Field distance. There are usually three representations of the scale. (1) Numeric formula, which uses the scale formula or fractional formula of numbers to express the size of the scale. For example, 1 centimeter on the map represents the distance of 500 kilometers, which can be written: 1 50

000 or written: 1 in 50 million. (2) Line segment type, draw a line segment on the map, and indicate the distance represented by 1 cm on the map.

3) Textual formula, directly write 1 cm on the map with text on the map to represent the distance of the field, such as 1 cm on the map is equivalent to 10 kilometers on the ground. The three representations are interchangeable. According to the scale on the map, the physical distance between two places on the map can be measured; According to the distance and scale of the two places, the distance on the map of the two places can be calculated; The scale can be calculated based on the distance on the map and the distance between the two places.

Depending on the purpose of the map, the size of the area to be represented, the size of the map sheet, and the details of the content of the map, the scale used for mapping varies from large to small.

Hello. First of all, what is a scale?

The scale bar indicates the degree to which the distance on the map is smaller than the distance from the field, so it is also called a scale.

It is expressed by the formula: scale bar = distance on the graph and actual distance.

There are usually three representations of the scale.

(1) Numeric formula, which uses the scale formula or fractional formula of numbers to express the size of the scale.

For example, 1 cm on a map represents the distance of 500 km, which can be written: 1 50,000,000 or 1 50,000,000.

2) Line segment type, draw a line segment on the map, and indicate the actual distance represented by 1 cm on the map.

3) Textual formula, directly write 1 cm on the map on the map to represent the distance of the field, for example: 1 cm on the map is equivalent to 500 kilometers on the ground, or 1/50 million.

Hope it helps.

The ratio of the distance on the graph to the actual distance is called the scale bar of the diagram.

Scale bar =

Distance on the graph. Actual distance.

Distance on the graph. Actual distance.

It is usually reduced to a ratio of 1 to the previous term. Scales are not allowed to have units.

Distance on the graph. Actual distance.

x scale. Actual distance.

Distance on the graph. Scale bar =

Scale bar calculation formula: Distance on the graph = actual distance Scale bar Actual distance = distance on the graph Scale bar Scale bar = Distance on the graph Actual distance. (Pay attention to the conversion between units in the scale calculation).

For example, 2 cm on the map represents the actual 300 km, and the scale can be found in this way - 2cm: 300km = 2cm:

30000000cm=1：15000000。 1:

5000000 means 1cm on the figure, which represents the actual distance of 5000000cm.

Ask questions 1 and 3.

How to ask questions and solve problems.

Ask the third question.

Actual distance = distance on the graph divided by the scale

Distance on the graph = actual distance * scale.

Scale bar = actual distance divided by distance on the graph.

These should be memorized!!

Scale bar = distance on the figure: actual distance.

Distance on the graph = actual distance x scale.

Actual distance = distance on the graph scale.

First unify the units.

Then use the scale chart for example = actual distance.

Find the scale: scale bar = distance on the figure: actual distance.

Find the actual distance: Arithmetic: Actual distance = distance on the graph Scale Solution scale: Solution: Let the actual distance be x.

Distance on the graph: x = scale.

Finding the distance on the graph: Arithmetic: distance on the graph = actual distance Scale Solution scale: Solution: Let the distance on the graph be x.

x: Actual distance = scale.