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Math Problems
Grade 7
Evaluate nonlinear expressions
Evaluate the following expression
2
×
1
0
4
−
7
3
2 \times 10^4 - 7^3
2
×
1
0
4
−
7
3
.
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Which sign makes the statement true?
\newline
5.20
×
1
0
5
5.20 \times 10^5
5.20
×
1
0
5
?
\text{?}
?
520
,
000
520,000
520
,
000
\newline
Choices:
\newline
(A)
>
>
>
\newline
(B)
<
<
<
\newline
(C)
=
=
=
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Evaluate the expression for
j
=
0
j = 0
j
=
0
.
\newline
3
j
2
=
3j^2 =
3
j
2
=
_____
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Evaluate the expression for
k
=
0
k = 0
k
=
0
.
\newline
9
k
2
=
9k^2 =
9
k
2
=
_____
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Evaluate the expression for
r
=
2
r = 2
r
=
2
.
\newline
3
r
2
=
3r^2 =
3
r
2
=
_____
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Evaluate the expression for
p
=
3
p = 3
p
=
3
.
\newline
2
p
2
=
2p^2 =
2
p
2
=
_____
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Evaluate the expression for
d
=
0
d = 0
d
=
0
.
\newline
2
d
2
=
2d^2 =
2
d
2
=
_____
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Evaluate the expression for
b
=
0
b = 0
b
=
0
.
\newline
b
2
=
b^2 =
b
2
=
_____
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Evaluate the expression for
z
=
4
z = 4
z
=
4
.
\newline
z
2
=
z^2 =
z
2
=
_____
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Evaluate the expression for
j
=
2
j = 2
j
=
2
.
\newline
5
j
2
=
5j^2 =
5
j
2
=
_____
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Evaluate the expression for
r
=
1
r = 1
r
=
1
.
\newline
12
r
2
=
12r^2 =
12
r
2
=
_____
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Evaluate the expression for
f
=
2
f = 2
f
=
2
.
\newline
2
f
2
=
2f^2 =
2
f
2
=
_____
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Evaluate the expression for
q
=
1
q = 1
q
=
1
.
\newline
5
q
2
=
5q^2 =
5
q
2
=
_____
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Evaluate the expression for
d
=
0
d = 0
d
=
0
.
\newline
15
d
2
=
15d^2 =
15
d
2
=
_____
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Evaluate the expression for
x
=
0
x = 0
x
=
0
.
\newline
6
x
2
=
6x^2 =
6
x
2
=
_____
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Evaluate the expression for
t
=
1
t = 1
t
=
1
.
\newline
7
t
2
=
7t^2 =
7
t
2
=
_____
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Evaluate the expression for
p
=
0
p = 0
p
=
0
.
\newline
14
p
2
=
14p^2 =
14
p
2
=
_____
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Evaluate the expression for
x
=
2
x = 2
x
=
2
.
\newline
4
x
2
=
4x^2 =
4
x
2
=
_____
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Evaluate the expression for
y
=
1
y = 1
y
=
1
.
\newline
y
2
=
y^2 =
y
2
=
_____
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Evaluate the expression for
z
=
1
z = 1
z
=
1
.
\newline
12
z
2
=
12z^2 =
12
z
2
=
_____
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Evaluate the expression for
v
=
1
v = 1
v
=
1
.
\newline
17
v
2
=
17v^2 =
17
v
2
=
_____
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Evaluate the expression for
r
=
0
r = 0
r
=
0
.
\newline
5
r
2
=
5r^2 =
5
r
2
=
_____
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In the following equation, what is the value of
d
d
d
?
\newline
(
3
d
)
10
=
3
20
(3^d)^{10} = 3^{20}
(
3
d
)
10
=
3
20
\newline
d = ____
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Compute:
\newline
17.21
÷
1
0
3
17.21 \div 10^{3}
17.21
÷
1
0
3
\newline
Answer:
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Which sign makes the statement true?
\newline
8
,
100
8,100
8
,
100
?
?
?
8.1
×
1
0
4
8.1 \times 10^4
8.1
×
1
0
4
\newline
Choices:
\newline
(A)
>
>
>
\newline
(B)
<
<
<
\newline
(C)
=
=
=
\newline
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Which sign makes the statement true?
\newline
8.5
×
1
0
2
8.5 \times 10^2
8.5
×
1
0
2
?
?
?
850
850
850
\newline
Choices:
\newline
(A)
>
>
>
\newline
(B)
<
<
<
\newline
(C)
=
=
=
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Solve the system of equations:
{
2
x
+
3
y
=
−
5
2
x
−
3
y
=
10
\newline\begin{cases} 2x + 3y = -5 \\ 2x - 3y = 10 \end{cases}
{
2
x
+
3
y
=
−
5
2
x
−
3
y
=
10
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