7th Grade Math

(Marvins-Underground-K-12) #1
Mid-Chapter Check 51

Mid-Chapter


Check


Describe the relationship between the terms
in each arithmetic sequence. Then write the
next three terms in each sequence. (Lesson 2B)


  1. 5, 8, 11, 14, ...

  2. 4, 11, 18, 25, ...

  3. 5.8, 10.8, 15.8, 20.8, ...

  4. 2.1, 2.3, 2.5, 2.7, ...

  5. MULTIPLE CHOICE Which of the following
    statements describes the relationship
    between the terms in the sequence
    2, 6, 10, ...? (Lesson 2B)
    F. Add 4 to each previous term.
    G. Subtract 4 from each previous term.
    H. Multiply each previous term by 3.
    I. Divide each previous term by 3.

  6. MONEY Antoine is saving money for a
    laptop computer. The table shows his
    savings for the first four months. (Lesson 2B)
    Month Savings
    1 $30
    2 $60
    3 $90
    4 $120


Write an algebraic expression to find each
month’s savings. Then use the expression
to find Antoine’s savings after 12 months.


  1. TOOTHPICKS Find the number of toothpicks
    in Figure 8 of the pattern below. (Lesson 2B)


Figure 1 Figure 2 Figure 3

Write each power as a product of the same
factor. (Lesson 1A)


  1. 45 2. 96

  2. ZOOS The Lincoln Park Zoo in Illinois is
    2 · 2 · 2 · 2 · 2 · 2 · 2 years old. Write this
    age in exponential form. (Lesson 1A)


Evaluate each expression. Justify each step.
(Lesson 1B)


  1. 25 - (3^2 + 2 × 5) 5. (8 + 4) ÷ (6 - 3)

  2. MULTIPLE CHOICE A coach spent $201 on
    baseball bats and baseball gloves. Let b
    represent the number of bats and g
    represent the number of gloves. Which
    expression represents the number of items
    that she bought? (Lesson 1C)
    A. b + g
    B. b · g
    C. 2 b + 3 g
    D. 3 b + 2 g


Use the Distributive Property to rewrite each
expression. (Lesson 1D)


  1. 4(6 + 9) 8. 2(7 + 5)

  2. 3(4) + 3(8) 10. 9(20) + 9(7)

  3. SCHOOL SUPPLIES Mrs. Martinez has three
    children. She purchased five folders and
    six pens for each child. Use the
    Distributive Property to write two
    expressions that represent the total number
    of folders and pens purchased. (Lesson 1D)

  4. FOOD At a local bakery, 6 bagels cost
    $0.75 each, 12 bagels cost $0.70 each, and
    18 bagels cost $0.65. Look for a pattern
    to find the cost of each bagel when a
    customer buys 30 bagels. (Lesson 2A)


051_051_C1_MCC_895130.indd 51 12/29/09 12:20 PM

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