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Integer Exponents and Scientific Notation Quiz

12 questions math Grades 7-8

The question sheet

Reveal any answer as you study
  1. A monomial is a term of the form ax^m where a is a constant and m is:

    • A negative integer
    • A positive whole number
    • A fraction
    • Any real number
    Reveal answer

    Answer: A positive whole number

    Source evidence

    PDF page 694: Monomials m A monomial is a term of the form ax , where a is a constant and m is a positive whole number.

  2. A polynomial with exactly two terms is called a:

    • Constant
    • Trinomial
    • Monomial
    • Binomial
    Reveal answer

    Answer: Binomial

    Source evidence

    PDF page 694: • binomial—A polynomial with exactly two terms is called a binomial.

  3. A polynomial with exactly one term is called a:

    • Trinomial
    • Binomial
    • Constant
    • Monomial
    Reveal answer

    Answer: Monomial

    Source evidence

    PDF page 694: • monomial—A polynomial with exactly one term is called a monomial.

  4. What is the degree of a constant?

    • 1
    • 0
    • Undefined
    • Equal to the constant
    Reveal answer

    Answer: 0

    Source evidence

    PDF page 695: The degree of a term is the sum of the exponents of its variables. The degree of a constant is 0. The degree of a polynomial is the highest degree of all its terms. Let’s see how this works by looking at several polynomials. We’ll take it step by step, starting with monomials, and then progressing to polynomials with more terms.

    PDF page 695: The degree of a polynomial and the degree of its terms are determined by the exponents of the variable. A monomial that has no variable, just a constant, is a special case. The degree of a constant is 0—it has no variable.

  5. The degree of a polynomial is:

    • The highest degree of all its terms
    • The sum of all degrees
    • The number of terms
    • The lowest degree of its terms
    Reveal answer

    Answer: The highest degree of all its terms

    Source evidence

    PDF page 695: The degree of a term is the sum of the exponents of its variables. The degree of a constant is 0. The degree of a polynomial is the highest degree of all its terms. Let’s see how this works by looking at several polynomials. We’ll take it step by step, starting with monomials, and then progressing to polynomials with more terms.

  6. A polynomial is in standard form when its terms are written:

    • In descending order of degrees
    • In ascending order of degrees
    • Alphabetically
    • By coefficient size
    Reveal answer

    Answer: In descending order of degrees

    Source evidence

    PDF page 695: A polynomial is in standard form when the terms of a polynomial are written in descending order of degrees. Get in the habit of writing the term with the highest degree first.

  7. To evaluate a polynomial for a given value, you first:

    • Substitute the value for the variable
    • Factor the polynomial
    • Graph the polynomial
    • Add the coefficients
    Reveal answer

    Answer: Substitute the value for the variable

    Source evidence

    PDF page 700: We have already learned how to evaluate expressions. Since polynomials are expressions, we’ll follow the same procedures to evaluate a polynomial. We will substitute the given value for the variable and then simplify using the order of operations.

  8. What must be true for terms to be combined as like terms?

    • Same number of terms
    • Same degree polynomial
    • Same variables with the same exponents
    • Same coefficients
    Reveal answer

    Answer: Same variables with the same exponents

    Source evidence

    PDF page 696: You have learned how to simplify expressions by combining like terms. Remember, like terms must have the same variables with the same exponent. Since monomials are terms, adding and subtracting monomials is the same as combining like terms. If the monomials are like terms, we just combine them by adding or subtracting the coefficient.

    PDF page 697: Remember that like terms must have the same variables with the same exponents.

  9. In Example 6.3, adding 25y^2 + 15y^2 gives:

    • 40y^4
    • 10y^2
    • 40y^2
    • 375y^2
    Reveal answer

    Answer: 40y^2

    Source evidence

    PDF page 696: EXAMPLE 6.3 2 2 Add: 25y + 15y . Solution

    PDF page 696: 40y Combine like terms.

  10. Which property lets us rearrange terms to put like terms together?

    • Commutative Property
    • Associative Property
    • Distributive Property
    • Identity Property
    Reveal answer

    Answer: Commutative Property

    Source evidence

    PDF page 697: We can think of adding and subtracting polynomials as just adding and subtracting a series of monomials. Look for the like terms—those with the same variables and the same exponent. The Commutative Property allows us to rearrange the terms to put like terms together.

  11. In Example 6.14, the height of the ball after t = 2 seconds is:

    • 250 feet
    • 218 feet
    • 186 feet
    • 64 feet
    Reveal answer

    Answer: 186 feet

    Source evidence

    PDF page 702: After 2 seconds the height of the ball is 186 feet.

  12. In Example 6.15, the cost of producing the box is:

    • $150
    • $456
    • $96
    • $360
    Reveal answer

    Answer: $456

    Source evidence

    PDF page 702: Simplify. Simplify. Simplify. The cost of producing the box is $456.

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