"Evaluation of Algebraic Expressions" PPT courseware on integers and their addition and subtraction

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"Evaluation of Algebraic Expressions" PPT courseware on integers and their addition and subtraction

Do it:

According to medical research, the quality of human blood accounts for about 6%-7.5% of human body weight.

⑴If someone weighs a kilogram, what is the approximate range of his blood mass?

⑵Liangliang’s weight is 40 kilograms. What is the approximate range of his blood quality?

⑶Estimate the quality of your own blood.

Discuss:

①As the value of n gradually becomes larger, how do the values ​​of the two algebraic expressions change?

②Estimate, which algebraic expression will exceed 100 first? Can you briefly explain your thoughts?

③If the value of 5n+6 is used as the numerator of a fraction, and the value of n2 is used as the denominator of the fraction, think about it, when n is very large, what number is the value of 5n+6/n² close to?

Summary and reflection:

What did you learn in this lesson? What are your gains and thoughts?

Please voice your thoughts and let the class share.

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For more information about the PPT courseware "Integers and their addition and subtraction of algebraic expressions" PPT courseware, please click the "Integers and their addition and subtraction ppt evaluation of algebraic expressions" ppt tag.

"Evaluation of Algebraic Expressions" Integers and their addition and subtraction PPT courseware 3:

"Evaluation of Algebraic Expressions" Integer expressions and their addition and subtraction PPT courseware 3 Expressed in algebra: (1) Three times the sum of x and 5 ________ (2) The number that is 1 more than the square of the difference between a and b is ___ (3 ) 5 times the sum of number A and half of number B _____ (4) A two-digit number, the number in the ones place is b ten..

"Evaluation of Algebraic Expressions" Integers and their addition and subtraction PPT courseware 2:

"Evaluation of Algebraic Expressions" Integers and their addition and subtraction PPT courseware 2 Review 1. The single digit of a two-digit number is a, and the tens digit is b. Please use an algebraic expression to express this two-digit number; 2. How to use an algebraic expression to express a three Number of digits? 3. What can the algebraic formula (1+8%)x represent? ..

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Update Time: 2024-09-15

This template belongs to Mathematics courseware Beijing Normal University seventh grade first volume mathematics industry PPT template

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