"Powers of Rational Numbers" Rational numbers and their operations PPT courseware

"Powers of Rational Numbers" Rational numbers and their operations PPT courseware

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"Powers of Rational Numbers" Rational numbers and their operations PPT courseware

⒈ What are powers of rational numbers?

The operation of finding the product of n identical factors a is called exponentiation, the result of exponentiation is called power, a is called the base, n is called the exponent, and an is read as the nth power of a (or the nth power of a).

practice

⒈ The meaning of 310 is ________; (-25)7 is pronounced as ________; -34 is pronounced as ________.

⒉ The number whose square is equal to itself is ________, and the number whose cube is equal to itself is ________.

⒊ If the 15th power of a number is a negative number, then the 2003th power of this number is ________.

⒋ (-2) The exponent in 6 is ________, and the base is ________.

⒌ The ​​number whose square is equal to - is ________, and the number whose cube is equal to 1/64 is ________.

discuss:

What is the difference between (1)2×32 and (2×3)2? What do each equal?

(2) What is the difference between 32 and 23? What do each equal?

What is the difference between (3)-34 and (-3)4? What do each equal?

What kind of operation did you learn in this class? What's your experience?

"Multiplying" spirit: Although it is simple repetition, the results are amazing. You should be like this as a person, be down-to-earth and take one step at a time, and your success will surprise you.

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For more information about the PPT courseware "Powers of Rational Numbers, Rational Numbers and Their Operations", please click the Power of Rational Numbers ppt Rational Numbers and their Operations ppt tag.

"Power of Rational Numbers" PPT courseware 4:

"Power of Rational Numbers" PPT Courseware 4 Collaborative Exploration 1: Fold in half twice and you can cut into 4 pieces, that is, 22 pieces; Fold in half three times and you can cut into 8 pieces, that is, 222 pieces; Question: If you fold in half 10 times, how many pieces can you cut into? ? Please use a formula to express it (no need to calculate the result). If you fold it in half 100 times, the formula...

"Power of Rational Numbers" PPT courseware 3:

"Power of Rational Numbers" PPT Courseware 3 Teaching Objectives Knowledge and Skills 1. Through examples, experience the process of generating the concept of power; 2. Understand the concepts of power, power, exponent, and base, and master the representation of power and power; 3. Understand the symbolic law of power and be able to carry out rational...

"Power of Rational Numbers" PPT courseware 2:

"Powers of Rational Numbers" PPT Courseware 2 There is a piece of paper with a thickness of 1 micron. After folding it in half 50 times, please imagine how high the thickness is? ⑴ After folding twice, how many microns is the thickness? 221 ⑵ After folding it in half three times, how many microns is the thickness? 2221 ⑶ After folding in half 4 times, the thickness...

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