MATH 8 : REVIEWER

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MEASURE OF CENTRAL TENDENCY, ADDING, SUBTRACTING AND MULTIPLYING POLYNOMIALS

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Lady Mae Claridad

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MATH 8 : REVIEWER


Froggy Jumps MATH 8 : REVIEWERVersión en línea MEASURE OF CENTRAL TENDENCY, ADDING, SUBTRACTING AND MULTIPLYING POLYNOMIALS por Lady Mae Claridad 1 The mean is found by adding all the values and dividing by the number of values. a TRUE b FALSE c MAYBE 2 The median is the value that appears most frequently in a data set. a TRUE b FALSE c MAYBE 3 The mode is the value that occurs most often in a data set. a TRUE b FALSE c MAYBE 4 The algebraic expression for "5 less than x" is x - 5. a TRUE b FALSE c MAYBE 5 Like terms have the same variables raised to the same exponents. a TRUE b FALSE c MAYBE 6 6𝑥 + 4𝑥 = 10𝑥 a TRUE b FALSE c 2X 7 (3𝑎 + 2) + (5𝑎 − 1) = 8𝑎 + 1 a TRUE b FALSE c MAYBE 8 The perimeter of a triangle with sides x + 2, x + 3, and x + 5 is 3x + 10. a TRUE b FALSE c MAYBE 9 (𝑥 + 4)²= x² + 8x + 16. a TRUE b FALSE c MAYBE 10 (y - 5)(y + 5) = y² - 25. a TRUE b FALSE c MAYBE 11 Which of the following is an example of quantitative data? a Favorite color of students b Number of books read by each student c Brand of school bag used 12 What measure of central tendency is found by adding all values and dividing the sum by the number of values? a Mean b Mode c Median 13 Find the mean of the data set: 6, 8, 12, 14, 10. a 8 b 9 c 10 14 Which statement best explains why the mean is affected by extremely high or low values? a It ignores the largest value. b It uses all the values in the data set. c It uses only the middle value. 15 What is the median of the data set: 7, 9, 3, 15, 11? a 7 b 8 c 9 16 A class collected the following amounts for a project: ₱50, ₱60, ₱50, ₱70, ₱80, and ₱50. Which measure best describes the amount collected most often? a Mean b Median c Mode 17 The average of four numbers is 15. If three numbers are 10, 14, and 18, what is the fourth number? a 18 b 19 c 20 18 Translate the phrase '8 less than b' into an algebraic expression. a 8 - b b b - 8 c 8b 19 A student claims that 3a + 2b = 5ab. Why is the student's solution incorrect? a The coefficients were added incorrectly. b The terms are unlike terms and cannot be combined. c The variables should be squared. 20 Simplify: -10y - (-4y). a -14y b -6y c 14y 21 Find the perimeter of a triangle with sides x + 1, x + 2, and x + 3 a 3x + 3 b 3x + 6 c x³ + 6 22 Which property is used when expanding (a + b)² = a² + 2ab + b²? a Difference of Squares b Distributive Property only c Square of a Binomial Pattern 23 Subtract: (5a - 3b + 2) - (2a + b - 1) a 3a - 4b + 3 b 3a - 2b + 1 c 7a - 2b + 1 24 Which pattern is used to expand the square of a binomial? a (a + b)(a - b) = a² - b² b a² + b² = (a + b)² c (a ± b)² = a² ± 2ab + b² 25 Expand: (x + 2)³. a x³ + 6x² + 12x + 8 b x³ + 2x² + 4x + 8 c x³ + 3x² + 3x + 8

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MATH 8 : REVIEWERVersión en línea

por Lady Mae Claridad

The mean is found by adding all the values and dividing by the number of values.

The median is the value that appears most frequently in a data set.

The mode is the value that occurs most often in a data set.

The algebraic expression for "5 less than x" is x - 5.

Like terms have the same variables raised to the same exponents.

6𝑥 + 4𝑥 = 10𝑥

(3𝑎 + 2) + (5𝑎 − 1) = 8𝑎 + 1

The perimeter of a triangle with sides x + 2, x + 3, and x + 5 is 3x + 10.

(𝑥 + 4)²= x² + 8x + 16.

(y - 5)(y + 5) = y² - 25.

Which of the following is an example of quantitative data?

What measure of central tendency is found by adding all values and dividing the sum by the number of values?

Find the mean of the data set: 6, 8, 12, 14, 10.

Which statement best explains why the mean is affected by extremely high or low values?

What is the median of the data set: 7, 9, 3, 15, 11?

A class collected the following amounts for a project: ₱50, ₱60, ₱50, ₱70, ₱80, and ₱50. Which measure best describes the amount collected most often?

The average of four numbers is 15. If three numbers are 10, 14, and 18, what is the fourth number?

Translate the phrase '8 less than b' into an algebraic expression.

A student claims that 3a + 2b = 5ab. Why is the student's solution incorrect?

Simplify: -10y - (-4y).

Find the perimeter of a triangle with sides x + 1, x + 2, and x + 3

Which property is used when expanding (a + b)² = a² + 2ab + b²?

Subtract: (5a - 3b + 2) - (2a + b - 1)

Which pattern is used to expand the square of a binomial?

Expand: (x + 2)³.