Podcast
Questions and Answers
What is the value of $4^3$?
What is the value of $4^3$?
- 12
- 81
- 16
- 64 (correct)
Which expression represents 'a raised to the power of 5'?
Which expression represents 'a raised to the power of 5'?
- $a \times 5$
- $5a$
- $a + a + a + a + a$
- $a^5$ (correct)
In the expression $7^4$, which number is the base?
In the expression $7^4$, which number is the base?
- 4
- 28
- 7 (correct)
- 11
What does the expression $(-3)^2$ equal?
What does the expression $(-3)^2$ equal?
Which of the following is equivalent to $3^2 \times 2^3$?
Which of the following is equivalent to $3^2 \times 2^3$?
Which of these is the correct exponential representation of 64 as a power of 4?
Which of these is the correct exponential representation of 64 as a power of 4?
How can the expression $a \times a \times b \times b \times b$ be written in exponential form?
How can the expression $a \times a \times b \times b \times b$ be written in exponential form?
What is the value of $4^2$ + $2^3$?
What is the value of $4^2$ + $2^3$?
Which of the following describes how the expression $5x^2 - 3$ is formed?
Which of the following describes how the expression $5x^2 - 3$ is formed?
What is the correct way to describe how the expression $2ab + 5$ is formed?
What is the correct way to describe how the expression $2ab + 5$ is formed?
How should we describe the formation of the expression $x^3$?
How should we describe the formation of the expression $x^3$?
Which of these correctly explains how the expression $3x^2 - 5x$ is formed?
Which of these correctly explains how the expression $3x^2 - 5x$ is formed?
What is the first operation performed to form the expression $10y - 20$?
What is the first operation performed to form the expression $10y - 20$?
What operation is used to obtain the term $xy$?
What operation is used to obtain the term $xy$?
How is the expression $4xy + 7$ formed?
How is the expression $4xy + 7$ formed?
Which of the expressions is formed by first multiplying a variable by itself and then multiplying this result by 2?
Which of the expressions is formed by first multiplying a variable by itself and then multiplying this result by 2?
Which of the following correctly represents the expansion of the term $a^4$?
Which of the following correctly represents the expansion of the term $a^4$?
What is the numerical coefficient of the term $-12pqr$?
What is the numerical coefficient of the term $-12pqr$?
In the term $7ab^2$, what is the coefficient of $b^2$?
In the term $7ab^2$, what is the coefficient of $b^2$?
If a term has a coefficient of '$-1$', how is it typically written?
If a term has a coefficient of '$-1$', how is it typically written?
What is the coefficient of $x$ in the term $x$?
What is the coefficient of $x$ in the term $x$?
In the expression $9jkl$, what is the coefficient of $9l$?
In the expression $9jkl$, what is the coefficient of $9l$?
Which of the following is the correct way to express the term $y \times y \times y$, using exponents?
Which of the following is the correct way to express the term $y \times y \times y$, using exponents?
In the term $15p^2q$, what is the coefficient of $15q$?
In the term $15p^2q$, what is the coefficient of $15q$?
In the expression $13 - y + 5y^2$, what is the numerical coefficient of the term $-y$?
In the expression $13 - y + 5y^2$, what is the numerical coefficient of the term $-y$?
What is the numerical coefficient of the term $4p^2q$ in the expression $4p^2q - 3pq^2 + 5$?
What is the numerical coefficient of the term $4p^2q$ in the expression $4p^2q - 3pq^2 + 5$?
In the expression $4x - 3y$, what is the coefficient of $x$?
In the expression $4x - 3y$, what is the coefficient of $x$?
What is the coefficient of $y$ in the expression $8 + yz$?
What is the coefficient of $y$ in the expression $8 + yz$?
In the expression $my + m$, what is the coefficient of $y$?
In the expression $my + m$, what is the coefficient of $y$?
Which of the following terms are like terms?
Which of the following terms are like terms?
Which of the following is an example of unlike terms?
Which of the following is an example of unlike terms?
Which pair of terms are considered 'like terms'?
Which pair of terms are considered 'like terms'?
What is the correct algebraic expression for 'One-half of the sum of numbers x and y'?
What is the correct algebraic expression for 'One-half of the sum of numbers x and y'?
Which option represents 'Numbers x and y both squared and added'?
Which option represents 'Numbers x and y both squared and added'?
Which of the following expressions represents 'Product of numbers y and z subtracted from 10'?
Which of the following expressions represents 'Product of numbers y and z subtracted from 10'?
Which of these is NOT a factor of the term –4ab
?
Which of these is NOT a factor of the term –4ab
?
Given the terms pq²
and – 4pq²
, which statement is correct?
Given the terms pq²
and – 4pq²
, which statement is correct?
Which algebraic expression correctly represents 'Sum of numbers a and b subtracted from their product'?
Which algebraic expression correctly represents 'Sum of numbers a and b subtracted from their product'?
Considering only the variables and their powers, which pair are NOT like terms?
Considering only the variables and their powers, which pair are NOT like terms?
A circular garden has a diameter of 21 meters. What is the length of rope needed to fence the garden twice?
A circular garden has a diameter of 21 meters. What is the length of rope needed to fence the garden twice?
What is the radius of a circle whose circumference is 154 meters?
What is the radius of a circle whose circumference is 154 meters?
A circle has a radius of 14 mm. What is its approximate area?
A circle has a radius of 14 mm. What is its approximate area?
If a circular sheet has a radius of 5 cm, what is its approximate area?
If a circular sheet has a radius of 5 cm, what is its approximate area?
A gardener needs to fence a circular garden with a diameter of 21 m, and the rope costs $4 per meter. What will be the total cost of the rope for two rounds of fence?
A gardener needs to fence a circular garden with a diameter of 21 m, and the rope costs $4 per meter. What will be the total cost of the rope for two rounds of fence?
A circular sheet with a radius of 4 cm has a circle of radius 3 cm removed from it. What is the area of the remaining sheet? (Use π = 3.14)
A circular sheet with a radius of 4 cm has a circle of radius 3 cm removed from it. What is the area of the remaining sheet? (Use π = 3.14)
What is the area of a circle with a diameter of 49 meters?
What is the area of a circle with a diameter of 49 meters?
A circle has a radius of 21 cm. What is its circumference?
A circle has a radius of 21 cm. What is its circumference?
Flashcards
Exponent
Exponent
A number multiplied by itself a certain number of times. For example, 5 raised to the power of 3 (or 5 cubed) is 5 * 5 * 5 = 125.
Base
Base
The number being multiplied in an exponent expression. For example, in 5 raised to the power of 3 (5 cubed), 5 is the base.
Power of a Number
Power of a Number
The result of multiplying a number by itself a certain number of times. For example, 5 raised to the power of 3 (or 5 cubed) is 125. 125 is the 3rd power of 5.
Exponential Notation
Exponential Notation
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Squared
Squared
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Cubed
Cubed
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Expressing a number in Exponential form
Expressing a number in Exponential form
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Comparing exponential numbers
Comparing exponential numbers
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Numerical Coefficient
Numerical Coefficient
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Like Terms
Like Terms
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Unlike Terms
Unlike Terms
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Constant
Constant
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Algebraic Expression
Algebraic Expression
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Term
Term
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Finding the Coefficient
Finding the Coefficient
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Equivalent Expressions
Equivalent Expressions
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What is x²?
What is x²?
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What is x³?
What is x³?
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What is a variable expression?
What is a variable expression?
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What is a term in an expression?
What is a term in an expression?
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What are factors in an expression?
What are factors in an expression?
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What is a product of variables?
What is a product of variables?
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How is 3x² obtained?
How is 3x² obtained?
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How is 3x² - 5 obtained?
How is 3x² - 5 obtained?
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Combining Like Terms
Combining Like Terms
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Variable
Variable
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Coefficient
Coefficient
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Omitted coefficient of +1
Omitted coefficient of +1
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Omitted coefficient of –1
Omitted coefficient of –1
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Constant Term
Constant Term
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Algebraic Term
Algebraic Term
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Expression
Expression
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Identifying Terms in an Expression
Identifying Terms in an Expression
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Circumference
Circumference
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Radius
Radius
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Diameter
Diameter
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Area of a circle
Area of a circle
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Area of a circle formula
Area of a circle formula
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Circumference formula
Circumference formula
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Area between two concentric circles
Area between two concentric circles
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Concentric circles
Concentric circles
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Study Notes
Exponents and Powers
- Large numbers can be written in a shorter form using exponents.
- 10,000 = 10 × 10 × 10 × 10 = 104
- '10' is the base, '4' is the exponent.
- 104 is read as 'ten raised to the power of four' or 'ten to the power four' or 'fourth power of 10'
- 1000 = 10 × 10 × 10 = 103
- 100,000 = 10 × 10 × 10 × 10 × 10 = 105
- In exponential form, the base is the number being multiplied and the exponent is how many times the base is multiplied.
Expanding Numbers
- 47561 = (4 × 10,000) + (7 × 1000) + (5 × 100) + (6 × 10) + 1
- 47561 = (4 × 104) + (7 × 103) + (5 × 102) + (6 × 101) + (1 × 100)
Laws of Exponents
- am × an = a(m + n)
- am ÷ an = a(m – n)
- (am)n = a(m × n)
- am × bm = (ab)m
- a0 = 1 (any non-zero integer a)
Taking Power of a Power
- (am)n = a(m × n)
- (23)2 = 2(3 × 2) = 26 = 64
Dividing Powers with the Same Base
- am ÷ an = a(m – n)
- 37 ÷ 34 = 3(7 – 4) = 33 = 27
Taking Power of a Power
- (am)n = a(m × n)
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