Topic Test Answers
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21
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Which number line correctly shows 4.5 – 2.5?
A
A number line going from 0 to 4.5 in increments of 0.5. An arrow goes from 0 to 4.5 and then backwards from 4.5 to 2.
B
A number line going from negative 4.5 to 0 in increments of 0.5. An arrow goes from negative 4.5 to negative 2 and then backwards from 0 to negative 4.5.
C
A number line going from negative 2.5 to positive 4.5 in increments of 0.5. An arrow goes from negative 2.5 to 0 and also from 0 to 4.5.
D
A number line going from negative 4.5 to positive 2.5 in increments of 0.5. An arrow goes from 2.5 to 0 and from 0 to negative 4.5.
22
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Which expression is equivalent to 63.56 + (–81.47)?
A
63.56 – 81.47B
63.56 + 81.47C
–63.56 – 81.47D
–63.56 + 81.4723
Rashal is adding the expression below.First, he rewrites the expression.Which number property did Rashal use to rewrite the expression?
A
associative propertyB
commutative propertyC
distributive propertyD
identity property24
Which expression has the same value as the one below?
A
22 + (negative 22) + (negative 10)
B
22 + (22) + (negative 10)
C
22 + (negative 22) + (10)
D
22 + 0 + 32
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