"Understanding Percentage" PPT Courseware 3

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"Understanding Percentage" PPT Courseware 3

In 1979, 57.5% of total household expenditures in China were spent on food, and leisure and entertainment consumption accounted for 2% of total expenditures.

In 2009, food consumption accounted for 32.8% of total expenditure, and leisure and entertainment consumption accounted for 28.7% of total expenditure.

The western region of my country is vast, accounting for about 71% of the country's land area and 29% of its population.

The western region of my country is very rich in resources, of which coal reserves account for about 36% of the country's total, oil reserves account for about 12%, and natural gas reserves account for about 52%.

Fill in the blanks according to the meaning of each percentage below

(1) The myopia rate among students in Class 1 of sixth grade is 20%.

Among the students in a class of sixth grade, the number of students ( ) accounts for 20% of the whole class.

(2) In the school chorus, the number of boys is 45% of the number of girls. In the school chorus, the number of boys is equal to the number of girls ( ).

The ratio of the number of boys to girls is ( ): 100.

do you know?

In fact, our lives require more than forty nutrients every day, including seven categories: protein (20%), fat (15%), carbohydrates (2%), vitamins (1%), minerals ( 1%), cellulose (1%), water (60%). Therefore, we must take in balanced nutrients every day to ensure our normal needs. We do not eat what we want to eat, but eat what we should eat.

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Update Time: 2024-11-15

This template belongs to Mathematics courseware Jiangsu Education Edition Sixth Grade Mathematics Volume 1 industry PPT template

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