TEKS.MATH.7.3A

Are these two expressions equivalent?
6 – (4 – 1) and (6 – 4) – 1

• Yes, because of the associative property
• Yes, because of the commutative property
• Yes, because of the distributive property
• No, these two expressions are not equivalent

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TEKS.MATH.7.3A

-0.03 - (-0.18) =

• -0.21
• -0.15
• 0.21
• 0.15

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TEKS.MATH.7.3A

Change 5/8 into a decimal. 

• 1.6
• 5.8
• .58
• .625

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TEKS.MATH.7.3A

3(4+3r)

• 12+9r
• 7+6r
• 12+5r

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TEKS.MATH.7.3A

Simplify each expression.
(6b³ + 6 - b⁴) - (8b³ - 6b⁴ + 2)

• 4b⁴ - 2b³ + 7
• 5b⁴ - 2b³ + 4
• b⁴ - 2b³ + 7
• 5b⁴ - 2b³ + 7

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TEKS.MATH.7.3A

TEKS.MATH.9-12.II.A.1

Simplify

• 42x⁵
• -42/x⁵
• 42/x^-5
• 42/x⁵

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TEKS.MATH.7.3A

-10 - 8

• -18
• 2
• -2
• 18

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TEKS.MATH.7.3A

34.  As a front passed, the temperature changed steadily over 6 hours.  Altogether it change -18 degrees.  What was the change in temperature per hour for the 6 hours?

• -18 ÷ 6 = -3 degrees
• 18 ÷ 6 = 3 degrees
• 18 + 6 = 24 degrees
• 18 - 6 = 12 degrees

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TEKS.MATH.7.3A

64 ÷ (-8)

• 8
• -8
• -9
• -7

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TEKS.MATH.7.3A

What is the simplified form of this expression
3x+4+5x+3

• 15x
• 8x+7
• 7x+8

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TEKS.MATH.7.3A