"Powers of Rational Numbers" Rational numbers and their operations PPT (Lesson 1)

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"Powers of Rational Numbers" Rational numbers and their operations PPT (Lesson 1)

Part One Content: Basic Knowledge Key Points

Knowledge point 1: The meaning of powers of rational numbers

1.(-2)4 means (D)

A.(-2)×4

B.2×(-4)

C.(-4)×(-4)

D.( -2 )×( -2 )×( -2 )×( -2 )

2. Regarding formula (-5)4, which of the following statements is wrong (C)

A. means (-5)×(-5)×(-5)×(-5)

B.-5 is the base, 4 is the exponent

C.-5 is the base and 4 is the power

D.4 is the exponent, (-5)4 is the power

Knowledge point 2: Exponential operation of rational numbers

3. Calculation: (-3)4=(D)

A.-12 B.12 C.-81 D.81

4.The number whose square is equal to 4 is (C)

A.2 B.-2

C.±2 D.None of the above are correct

5. Calculation:

(1)(-4)3;　(2)-25;

Power of Rational Numbers PPT, Part 2: Improvement of Comprehensive Ability

6. Among the four numbers |-1|,(-1)2,(-1)3,-(-1), the numbers that are opposite to -1 are (C)

A.1 B.2 C.3 D.4

7. (Original) Among the following formulas, which one is equal (D)

A.23 and 32 B.-( -2 ) and -|-2|

C.(-2)3 and|-2|3 D.(-3)3 and-33

8. There is such a question in the "Book of Calculations" by the 13th century mathematician Fibonacci: "There were 7 old women in Rome, each driving 7 donkeys, each donkey carrying 7 bags, each bag containing 7 loaves, each loaf comes with 7 table knives, and each table knife has 7 scabbards." Then the number of scabbards is (C)

A.42 B.49 C.76 D.77

Power of Rational Numbers PPT, Part 3: Expansion, Research and Breakthroughs

11. Observe the following patterns:

13+23=9=1/4×4×9=1/4×22×32;

13+23+33=36=1/4×9×16=1/4×32×42;

13+23+33+43=100=1/4×16×25=1/4×42×52;

(1) Calculate the value of 13+23+33+…+103.

(2) Try to guess the value of 13+23+33+…+n3.

Keywords: Beijing Normal University edition seventh-grade mathematics PPT courseware free download, power of rational numbers PPT download, rational numbers and their operations PPT download, .PPT format;

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

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

"Power of Rational Numbers" Rational Numbers and Their Operations PPT Part One Content: Learning Objectives 1. Understand and master the concepts and meanings of powers, powers, bases, and exponents of rational numbers. (Key Points) 2. Be able to correctly perform power operations of rational numbers .(Difficulty) ... ... ... ... ..

"Powers of Rational Numbers" Rational numbers and their operations PPT (Lesson 2):

"Power of Rational Numbers" Rational Numbers and Their Operations PPT (Lesson 2) Part One: Knowledge Points Basic Knowledge Point 1 Simple Power of Rational Numbers 1. (-1) The result of 2019 is (A) A.-1 B.1 C.-2019 D.2019 2. The following groups of numbers are mutually exclusive..

"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...

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Update Time: 2024-10-19

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