"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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"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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Update Time: 2024-09-29

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

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