| Category | Format | Size |
|---|---|---|
| People's Education Press Mathematics Volume 2 for Sixth Grade | pptx | 6 MB |
"Solving Problems with Proportions" Proportion PPT Courseware
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"Solving Problems with Proportions" Proportion PPT Courseware
Our family used 8 tons of water last month, and the water bill was 12.8 yuan.
First calculate the price per ton of water, and then calculate the cost of 10 tons of water.
How much is it per ton of water?
12.8÷8=1.6(yuan)
How much does 10 tons of water cost?
1.6×10=16(yuan)
Because the price per ton of water is constant, the water fee is directly proportional to the ton of water used. In other words, the ratio of the water fee to the ton of water used by two companies is the same.
The process of using proportions to solve this type of problem can be summarized into the following steps:
(1) Suppose the required problem is x;
(2) Use the meaning of direct proportion or inverse proportion to determine whether the two quantities in the question are directly proportional or inversely proportional;
(3) List proportional formulas;
(4) Solve the proportion, check the calculation, and give the answer.
1. When the scale is constant, the distance on the map is directly proportional to the actual distance. ( )
2. In the formula for the circumference of a circle, when C is constant, π and d are inversely proportional. ( )
3. Speed is directly proportional to distance. ( )
4. y�8=x (x is not 0), y and x are directly proportional. ( )
500 kilograms of seawater contains 25 kilograms of salt. How many tons of salt does 120 tons of seawater contain?
The Huanan Garment Factory processes 180 suits in 3 days. Based on this calculation, how many days will it take to produce 540 suits?
Using the same bricks to pave the floor, it would take 618 bricks to cover 18 square meters. How many bricks are needed to pave 24 square meters?
A pile of coal was originally planned to burn 3 tons per day and could be burned for 96 days. Due to the improved stove, 2.4 tons were burned per day. How many days can this pile of coal actually be burned?
Keywords: Proportion courseware, use proportion to solve problems courseware, New People's Education Edition sixth grade mathematics PPT courseware, sixth grade mathematics slide courseware download, proportion PPT courseware download, use proportion to solve problems PPT courseware download, .ppt format
For more information about "Using Proportions to Solve Problems with Proportions" PPT courseware, please click the Use Proportions to Solve Problems ppt proportion ppt tag.
"Solving Problems with Proportions" Comparison and Proportional Distribution PPT Courseware 2:
"Solving Problems with Proportions" Ratio and Proportional Distribution PPT Courseware 2 1. Old knowledge foreshadowing It is known that the ratio of the number of boys to the number of girls in Class 1 of sixth grade is 3:4 (1) The ratio of the number of boys to the number of the whole class is ( ): ( ) (2) The number of boys in the class is ( )/( ) (3) The number of girls..
"Solving Problems with Proportions" Comparison and Proportional Distribution PPT Courseware:
"Use Proportions to Solve Problems" Ratio and Proportional Distribution PPT Courseware Determine whether the two quantities in each of the following questions are proportional, and to what proportion? Why? 1. The unit price for purchasing textbooks is certain, the total price and quantity. 2. The total distance, speed and time are certain. 3. Total parts...
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Update Time: 2024-07-06
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