"Square Root" Real Numbers PPT Courseware 6

Description

"Square Root" Real Numbers PPT Courseware 6

introduce

If you want to make a square tabletop with a side length of 3 decimeters, what is its area?

This question actually asks for:

3²=?

Answer: 9 square decimeters

exponentiation

This is the operation of exponentiation given the base and exponent.

Conversely, if we want to make a square tabletop with an area of ​​3 square decimeters, what is its side length in decimeters?

In fact, it is required to find a number so that its square is equal to 9, that is: ()²=9

Obviously, the brackets should be ±3, but -3 does not fit the meaning of the question.

∴The side length of the square tabletop should be 3 decimeters.

Definition of square root: If x2=a, then x is called the square root (quadratic root) of a.

The definition of square root: The operation of finding the square root of a number a is called square root.

induction

1. A positive number has two square roots, which are opposites of each other;

2. The square root of 0 is 0;

3. Negative numbers have no square roots.

summary

1. What knowledge did you learn in this class?

Definition of square root

Representation of square root

How to find the square root of a non-negative number

2. What is your experience?

The difference and connection between arithmetic square roots and square roots

Which of the following statements is correct ( )

(A)25 is the arithmetic square root of 5.

(B)±4 is the arithmetic square root of 16.

(C)±6 is (-6)2 is the square root.

(D)0.01 is the arithmetic square root of 0.1.

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For more information about the "Square Roots of Real Numbers" PPT courseware, please click the Square Roots ppt Real Numbers ppt tag.

"Square Root" PPT courseware 9:

"Square Roots" PPT Courseware 9 Learning Objectives 1. Be able to tell the meaning of arithmetic square roots, and be able to use symbols to represent the arithmetic square roots of positive numbers. (Key Points) 2. Be able to use square operations to find the arithmetic square roots of certain non-negative numbers. (Key Points) 3 . Be able to understand and apply the properties of square roots in arithmetic..

"Square Root" PPT courseware 8:

"Square Root" PPT Courseware 8 [Learning Objectives] (Only when you have a goal in mind will you have a direction in learning) 1. Understand the definition of square root, master the properties of square root, and use the root sign to represent the square root of a number. 2. Know that the square root and the square are mutually exclusive The inverse operation will make use of this reciprocal operation.

"Square Root" PPT courseware 7:

"Square Root" PPT Courseware 7 Knowledge Review ⑴ The square root of 25 is 5. ⑵ The square root of 81 is 9. ⑶ The square root of 49/64 is 7/8. ⑷ The square root of 0 is 0. ⑸ Does -4 have a square root? Arithmetic square root The positive square root a of a positive number a is called the arithmetic square of a..

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Update Time: 2024-11-26

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 2 industry PPT template

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