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Math Problems
Grade 8
Evaluate powers
Compare the numbers. Pick the correct sign.
\newline
−
3
?
−
6
-3 \,?\, -6
−
3
?
−
6
\newline
\newline
You can use the number line to help.
\newline
\newline
Choices:
\newline
(A)
>
>
>
\newline
(B)
<
<
<
\newline
(C)
=
=
=
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Find the area of a circle with a circumference of
37
37
37
.
68
68
68
units.
\newline
□
\square
□
units
2
^{2}
2
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Find the area of a circle with a circumference of
18
18
18
.
84
84
84
units.
\newline
□
\square
□
units
2
^{2}
2
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2
2
2
.
n
−
9
=
13
n-9=13
n
−
9
=
13
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Learn with an example
\newline
or
\newline
Watch a video
\newline
Evaluate. Write your answer as a whole number or as a simplified fraction.
\newline
2
2
⋅
2
2
=
2^{2} \cdot 2^{2}=
2
2
⋅
2
2
=
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Learn with an example
\newline
or
\newline
Watch a video (D)
\newline
Evaluate. Write your answer as a whole number or as a simplified fraction.
\newline
4
2
⋅
4
2
=
4^{2} \cdot 4^{2}=
4
2
⋅
4
2
=
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Determine the smallest integer value of
x
x
x
in the solution of the following inequality.
\newline
4
x
−
1
>
−
12
4 x-1>-12
4
x
−
1
>
−
12
\newline
Answer:
x
=
x=
x
=
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Determine the largest integer value of
x
x
x
in the solution of the following inequality.
\newline
4
x
−
5
<
7
4 x-5<7
4
x
−
5
<
7
\newline
Answer:
x
=
x=
x
=
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State all integer values of
x
x
x
in the interval
−
8
≤
x
≤
−
3
-8 \leq x \leq-3
−
8
≤
x
≤
−
3
that satisfy the following inequality:
\newline
2
x
+
10
<
−
4
2 x+10<-4
2
x
+
10
<
−
4
\newline
Answer:
x
=
x=
x
=
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Find the area of a circle with a circumference of
50
50
50
.
24
24
24
units.
\newline
□
\square
□
units
2
^{2}
2
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What is the modulus (absolute value) of
6
−
8
i
6-8 i
6
−
8
i
?
\newline
Don't round. If necessary, express your answer as a radical.
\newline
∣
6
−
8
i
∣
=
|6-8 i|=
∣6
−
8
i
∣
=
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