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Math Problems
Grade 7
Estimate percents of numbers
Which is the most accurate way to estimate
27
%
27\%
27%
of
30
30
30
?
\newline
Choices:
\newline
(A)
2
3
×
32
\frac{2}{3} \times 32
3
2
×
32
\newline
(B)
1
2
×
32
\frac{1}{2} \times 32
2
1
×
32
\newline
(C)
3
4
×
32
\frac{3}{4} \times 32
4
3
×
32
\newline
(D)
1
4
×
32
\frac{1}{4} \times 32
4
1
×
32
Get tutor help
Which is the most accurate way to estimate
35
%
35\%
35%
of
31
31
31
?
\newline
Choices:
\newline
(A)
3
4
×
30
\frac{3}{4} \times 30
4
3
×
30
\newline
(B)
1
3
×
30
\frac{1}{3} \times 30
3
1
×
30
\newline
(C)
2
3
×
30
\frac{2}{3} \times 30
3
2
×
30
\newline
(D)
1
2
×
30
\frac{1}{2} \times 30
2
1
×
30
Get tutor help
Which is the most accurate way to estimate
65
%
65\%
65%
of
67
67
67
?
\newline
Choices:
\newline
(A)
1
4
×
68
\frac{1}{4} \times 68
4
1
×
68
\newline
(B)
1
3
×
66
\frac{1}{3} \times 66
3
1
×
66
\newline
(C)
2
3
×
66
\frac{2}{3} \times 66
3
2
×
66
\newline
(D)
1
2
×
68
\frac{1}{2} \times 68
2
1
×
68
Get tutor help
Which is the most accurate way to estimate
23
%
23\%
23%
of
62
62
62
?
\newline
Choices:
\newline
(A)
2
3
×
60
\frac{2}{3} \times 60
3
2
×
60
\newline
(B)
2
3
×
65
\frac{2}{3} \times 65
3
2
×
65
\newline
(C)
1
4
×
60
\frac{1}{4} \times 60
4
1
×
60
\newline
(D)
1
4
×
65
\frac{1}{4} \times 65
4
1
×
65
Get tutor help
Which is the most accurate way to estimate
74
%
74\%
74%
of
89
89
89
?
\newline
Choices:
\newline
(A)
3
4
×
91
\frac{3}{4} \times 91
4
3
×
91
\newline
(B)
2
3
×
88
\frac{2}{3} \times 88
3
2
×
88
\newline
(C)
2
3
×
91
\frac{2}{3} \times 91
3
2
×
91
\newline
(D)
3
4
×
88
\frac{3}{4} \times 88
4
3
×
88
Get tutor help
Which is the most accurate way to estimate
76
%
76\%
76%
of
19
19
19
?
\newline
Choices:
\newline
(A)
1
3
×
21
\frac{1}{3} \times 21
3
1
×
21
\newline
(B)
3
4
×
21
\frac{3}{4} \times 21
4
3
×
21
\newline
(C)
1
3
×
20
\frac{1}{3} \times 20
3
1
×
20
\newline
(D)
3
4
×
20
\frac{3}{4} \times 20
4
3
×
20
Get tutor help
Which is the most accurate way to estimate
34
%
34\%
34%
of
31
31
31
?
\newline
Choices:
\newline
(A)
1
3
×
30
\frac{1}{3} \times 30
3
1
×
30
\newline
(B)
1
4
×
32
\frac{1}{4} \times 32
4
1
×
32
\newline
(C)
2
3
×
30
\frac{2}{3} \times 30
3
2
×
30
\newline
(D)
1
2
×
30
\frac{1}{2} \times 30
2
1
×
30
Get tutor help
Which is the most accurate way to estimate
27
%
27\%
27%
of
11
11
11
?
\newline
Choices:
\newline
(A)
1
4
×
13
\frac{1}{4} \times 13
4
1
×
13
\newline
(B)
3
4
×
12
\frac{3}{4} \times 12
4
3
×
12
\newline
(C)
3
4
×
13
\frac{3}{4} \times 13
4
3
×
13
\newline
(D)
1
4
×
12
\frac{1}{4} \times 12
4
1
×
12
Get tutor help
Which is the most accurate way to estimate
32
%
32\%
32%
of
55
55
55
?
\newline
Choices:
\newline
(A)
3
4
×
54
\frac{3}{4} \times 54
4
3
×
54
\newline
(B)
1
2
×
54
\frac{1}{2} \times 54
2
1
×
54
\newline
(C)
1
4
×
54
\frac{1}{4} \times 54
4
1
×
54
\newline
(D)
1
3
×
54
\frac{1}{3} \times 54
3
1
×
54
Get tutor help
Which is the most accurate way to estimate
50
%
50\%
50%
of
75
75
75
?
\newline
Choices:
\newline
(A)
1
3
×
77
\frac{1}{3} \times 77
3
1
×
77
\newline
(B)
1
2
×
76
\frac{1}{2} \times 76
2
1
×
76
\newline
(C)
1
2
×
77
\frac{1}{2} \times 77
2
1
×
77
\newline
(D)
1
3
×
76
\frac{1}{3} \times 76
3
1
×
76
Get tutor help
Which is the most accurate way to estimate
25
%
25\%
25%
of
31
31
31
?
\newline
Choices:
\newline
(A)
1
2
×
32
\frac{1}{2} \times 32
2
1
×
32
\newline
(B)
1
4
×
33
\frac{1}{4} \times 33
4
1
×
33
\newline
(C)
1
4
×
32
\frac{1}{4} \times 32
4
1
×
32
\newline
(D)
1
2
×
33
\frac{1}{2} \times 33
2
1
×
33
Get tutor help
Which is the most accurate way to estimate
35
%
35\%
35%
of
50
50
50
?
\newline
Choices:
\newline
(A)
1
2
×
48
\frac{1}{2} \times 48
2
1
×
48
\newline
(B)
1
2
×
51
\frac{1}{2} \times 51
2
1
×
51
\newline
(C)
1
3
×
51
\frac{1}{3} \times 51
3
1
×
51
\newline
(D)
1
3
×
48
\frac{1}{3} \times 48
3
1
×
48
Get tutor help
Which is the most accurate way to estimate
75
%
75\%
75%
of
47
47
47
?
\newline
Choices:
\newline
(A)
1
4
×
48
\frac{1}{4} \times 48
4
1
×
48
\newline
(B)
1
3
×
48
\frac{1}{3} \times 48
3
1
×
48
\newline
(C)
2
3
×
48
\frac{2}{3} \times 48
3
2
×
48
\newline
(D)
3
4
×
48
\frac{3}{4} \times 48
4
3
×
48
Get tutor help
What is the product expressed in scientific notation?
\newline
0.00043
×
(
6.5
×
1
0
8
)
0.00043 \times\left(6.5 \times 10^{8}\right)
0.00043
×
(
6.5
×
1
0
8
)
\newline
2.795
×
1
0
6
2.795 \times 10^{6}
2.795
×
1
0
6
\newline
2.795
×
1
0
3
2.795 \times 10^{3}
2.795
×
1
0
3
\newline
2.795
×
1
0
4
2.795 \times 10^{4}
2.795
×
1
0
4
\newline
2.795
×
1
0
5
2.795 \times 10^{5}
2.795
×
1
0
5
Get tutor help
Which is the most accurate way to estimate
66
%
66\%
66%
of
91
91
91
?
\newline
Choices:
\newline
(A)
2
3
×
93
\frac{2}{3} \times 93
3
2
×
93
\newline
(B)
1
2
×
93
\frac{1}{2} \times 93
2
1
×
93
\newline
(C)
2
3
×
90
\frac{2}{3} \times 90
3
2
×
90
\newline
(D)
1
2
×
90
\frac{1}{2} \times 90
2
1
×
90
Get tutor help
Which is the most accurate way to estimate
65
%
65\%
65%
of
61
61
61
?
\newline
Choices:
\newline
(A)
2
3
×
63
\frac{2}{3} \times 63
3
2
×
63
\newline
(B)
1
3
×
60
\frac{1}{3} \times 60
3
1
×
60
\newline
(C)
1
3
×
63
\frac{1}{3} \times 63
3
1
×
63
\newline
(D)
2
3
×
60
\frac{2}{3} \times 60
3
2
×
60
Get tutor help
Which is the most accurate way to estimate
50
%
50\%
50%
of
57
57
57
?
\newline
Choices:
\newline
(A)
1
2
×
55
\frac{1}{2} \times 55
2
1
×
55
\newline
(B)
1
4
×
55
\frac{1}{4} \times 55
4
1
×
55
\newline
(C)
1
2
×
58
\frac{1}{2} \times 58
2
1
×
58
\newline
(D)
1
4
×
58
\frac{1}{4} \times 58
4
1
×
58
Get tutor help
Which is the most accurate way to estimate
67
%
67\%
67%
of
76
76
76
?
\newline
Choices:
\newline
(A)
2
3
×
73
\frac{2}{3} \times 73
3
2
×
73
\newline
(B)
3
4
×
75
\frac{3}{4} \times 75
4
3
×
75
\newline
(C)
3
4
×
73
\frac{3}{4} \times 73
4
3
×
73
\newline
(D)
2
3
×
75
\frac{2}{3} \times 75
3
2
×
75
Get tutor help
Which is the most accurate way to estimate
25
%
25\%
25%
of
31
31
31
?
\newline
Choices:
\newline
(A)
1
4
×
33
\frac{1}{4} \times 33
4
1
×
33
\newline
(B)
1
3
×
32
\frac{1}{3} \times 32
3
1
×
32
\newline
(C)
1
3
×
33
\frac{1}{3} \times 33
3
1
×
33
\newline
(D)
1
4
×
32
\frac{1}{4} \times 32
4
1
×
32
Get tutor help
Which is the most accurate way to estimate
34
%
34\%
34%
of
41
41
41
?
\newline
Choices:
\newline
(A)
1
3
×
42
\frac{1}{3} \times 42
3
1
×
42
\newline
(B)
1
4
×
40
\frac{1}{4} \times 40
4
1
×
40
\newline
(C)
2
3
×
42
\frac{2}{3} \times 42
3
2
×
42
\newline
(D)
3
4
×
40
\frac{3}{4} \times 40
4
3
×
40
Get tutor help
Which is the most accurate way to estimate
48
%
48\%
48%
of
51
51
51
?
\newline
Choices:
\newline
(A)
1
2
×
50
\frac{1}{2} \times 50
2
1
×
50
\newline
(B)
1
3
×
50
\frac{1}{3} \times 50
3
1
×
50
\newline
(C)
1
4
×
50
\frac{1}{4} \times 50
4
1
×
50
\newline
(D)
2
3
×
50
\frac{2}{3} \times 50
3
2
×
50
Get tutor help
Which is the most accurate way to estimate
75
%
75\%
75%
of
45
45
45
?
\newline
Choices:
\newline
(A)
1
2
×
43
\frac{1}{2} \times 43
2
1
×
43
\newline
(B)
1
2
×
44
\frac{1}{2} \times 44
2
1
×
44
\newline
(C)
3
4
×
43
\frac{3}{4} \times 43
4
3
×
43
\newline
(D)
3
4
×
44
\frac{3}{4} \times 44
4
3
×
44
Get tutor help
Which is the most accurate way to estimate
35
%
35\%
35%
of
35
35
35
?
\newline
Choices:
\newline
(A)
2
3
×
36
\frac{2}{3} \times 36
3
2
×
36
\newline
(B)
1
3
×
36
\frac{1}{3} \times 36
3
1
×
36
\newline
(C)
1
2
×
36
\frac{1}{2} \times 36
2
1
×
36
\newline
(D)
1
4
×
36
\frac{1}{4} \times 36
4
1
×
36
Get tutor help
Which is the most accurate way to estimate
51
%
51\%
51%
of
93
93
93
?
\newline
Choices:
\newline
(A)
2
3
×
94
\frac{2}{3} \times 94
3
2
×
94
\newline
(B)
1
2
×
94
\frac{1}{2} \times 94
2
1
×
94
\newline
(C)
1
4
×
94
\frac{1}{4} \times 94
4
1
×
94
\newline
(D)
1
3
×
94
\frac{1}{3} \times 94
3
1
×
94
Get tutor help
Which is the most accurate way to estimate
27
%
27\%
27%
of
10
10
10
?
\newline
Choices:
\newline
(A)
1
4
×
12
\frac{1}{4} \times 12
4
1
×
12
\newline
(B)
1
2
×
12
\frac{1}{2} \times 12
2
1
×
12
\newline
(C)
2
3
×
12
\frac{2}{3} \times 12
3
2
×
12
\newline
(D)
3
4
×
12
\frac{3}{4} \times 12
4
3
×
12
Get tutor help
Which is the most accurate way to estimate
23
%
23\%
23%
of
49
49
49
?
\newline
Choices:
\newline
(A)
1
4
×
51
\frac{1}{4} \times 51
4
1
×
51
\newline
(B)
1
3
×
48
\frac{1}{3} \times 48
3
1
×
48
\newline
(C)
1
4
×
48
\frac{1}{4} \times 48
4
1
×
48
\newline
(D)
1
3
×
51
\frac{1}{3} \times 51
3
1
×
51
Get tutor help
Which is the most accurate way to estimate
76
%
76\%
76%
of
90
90
90
?
\newline
Choices:
\newline
(A)
2
3
×
93
\frac{2}{3} \times 93
3
2
×
93
\newline
(B)
3
4
×
93
\frac{3}{4} \times 93
4
3
×
93
\newline
(C)
3
4
×
92
\frac{3}{4} \times 92
4
3
×
92
\newline
(D)
2
3
×
92
\frac{2}{3} \times 92
3
2
×
92
Get tutor help
Which is the most accurate way to estimate
77
%
77\%
77%
of
39
39
39
?
\newline
Choices:
\newline
(A)
2
3
×
40
\frac{2}{3} \times 40
3
2
×
40
\newline
(B)
3
4
×
41
\frac{3}{4} \times 41
4
3
×
41
\newline
(C)
3
4
×
40
\frac{3}{4} \times 40
4
3
×
40
\newline
(D)
2
3
×
41
\frac{2}{3} \times 41
3
2
×
41
Get tutor help
Which is the most accurate way to estimate
65
%
65\%
65%
of
91
91
91
?
\newline
Choices:
\newline
(A)
2
3
×
90
\frac{2}{3} \times 90
3
2
×
90
\newline
(B)
3
4
×
90
\frac{3}{4} \times 90
4
3
×
90
\newline
(C)
1
4
×
90
\frac{1}{4} \times 90
4
1
×
90
\newline
(D)
1
2
×
90
\frac{1}{2} \times 90
2
1
×
90
Get tutor help
Which is the most accurate way to estimate
34
%
34\%
34%
of
59
59
59
?
\newline
Choices:
\newline
(A)
1
3
×
60
\frac{1}{3} \times 60
3
1
×
60
\newline
(B)
1
2
×
58
\frac{1}{2} \times 58
2
1
×
58
\newline
(C)
2
3
×
60
\frac{2}{3} \times 60
3
2
×
60
\newline
(D)
3
4
×
60
\frac{3}{4} \times 60
4
3
×
60
Get tutor help
Which is the most accurate way to estimate
32
%
32\%
32%
of
88
88
88
?
\newline
Choices:
\newline
(A)
1
3
×
90
\frac{1}{3} \times 90
3
1
×
90
\newline
(B)
1
3
×
87
\frac{1}{3} \times 87
3
1
×
87
\newline
(C)
3
4
×
90
\frac{3}{4} \times 90
4
3
×
90
\newline
(D)
3
4
×
87
\frac{3}{4} \times 87
4
3
×
87
Get tutor help
Which is the most accurate way to estimate
26
%
26\%
26%
of
39
39
39
?
\newline
Choices:
\newline
(A)
1
4
×
40
\frac{1}{4} \times 40
4
1
×
40
\newline
(B)
3
4
×
40
\frac{3}{4} \times 40
4
3
×
40
\newline
(C)
1
2
×
40
\frac{1}{2} \times 40
2
1
×
40
\newline
(D)
1
3
×
40
\frac{1}{3} \times 40
3
1
×
40
Get tutor help
Which is the most accurate way to estimate
25
%
25\%
25%
of
81
81
81
?
\newline
Choices:
\newline
(A)
1
4
×
83
\frac{1}{4} \times 83
4
1
×
83
\newline
(B)
1
4
×
80
\frac{1}{4} \times 80
4
1
×
80
\newline
(C)
1
3
×
83
\frac{1}{3} \times 83
3
1
×
83
\newline
(D)
1
3
×
80
\frac{1}{3} \times 80
3
1
×
80
Get tutor help
Which is the most accurate way to estimate
23
%
23\%
23%
of
41
41
41
?
\newline
Choices:
\newline
(A)
2
3
×
42
\frac{2}{3} \times 42
3
2
×
42
\newline
(B)
1
4
×
40
\frac{1}{4} \times 40
4
1
×
40
\newline
(C)
3
4
×
40
\frac{3}{4} \times 40
4
3
×
40
\newline
(D)
1
3
×
42
\frac{1}{3} \times 42
3
1
×
42
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Which is the most accurate way to estimate
65
%
65\%
65%
of
76
76
76
?
\newline
Choices:
\newline
(A)
3
4
×
75
\frac{3}{4} \times 75
4
3
×
75
\newline
(B)
3
4
×
78
\frac{3}{4} \times 78
4
3
×
78
\newline
(C)
2
3
×
75
\frac{2}{3} \times 75
3
2
×
75
\newline
(D)
2
3
×
78
\frac{2}{3} \times 78
3
2
×
78
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Which is the most accurate way to estimate
65
%
65\%
65%
of
91
91
91
?
\newline
Choices:
\newline
(A)
1
3
×
90
\frac{1}{3} \times 90
3
1
×
90
\newline
(B)
1
4
×
90
\frac{1}{4} \times 90
4
1
×
90
\newline
(C)
1
2
×
90
\frac{1}{2} \times 90
2
1
×
90
\newline
(D)
2
3
×
90
\frac{2}{3} \times 90
3
2
×
90
Get tutor help
Which is the most accurate way to estimate
76
%
76\%
76%
of
62
62
62
?
\newline
Choices:
\newline
(A)
1
3
×
64
\frac{1}{3} \times 64
3
1
×
64
\newline
(B)
1
4
×
64
\frac{1}{4} \times 64
4
1
×
64
\newline
(C)
3
4
×
64
\frac{3}{4} \times 64
4
3
×
64
\newline
(D)
1
2
×
64
\frac{1}{2} \times 64
2
1
×
64
Get tutor help
Which is the most accurate way to estimate
77
%
77\%
77%
of
31
31
31
?
\newline
Choices:
\newline
(A)
3
4
×
32
\frac{3}{4} \times 32
4
3
×
32
\newline
(B)
2
3
×
32
\frac{2}{3} \times 32
3
2
×
32
\newline
(C)
2
3
×
33
\frac{2}{3} \times 33
3
2
×
33
\newline
(D)
3
4
×
33
\frac{3}{4} \times 33
4
3
×
33
Get tutor help
Which is the most accurate way to estimate
35
%
35\%
35%
of
34
34
34
?
\newline
Choices:
\newline
(A)
1
2
×
33
\frac{1}{2} \times 33
2
1
×
33
\newline
(B)
2
3
×
33
\frac{2}{3} \times 33
3
2
×
33
\newline
(C)
3
4
×
33
\frac{3}{4} \times 33
4
3
×
33
\newline
(D)
1
3
×
33
\frac{1}{3} \times 33
3
1
×
33
Get tutor help
Which is the most accurate way to estimate
77
%
77\%
77%
of
23
23
23
?
\newline
Choices:
\newline
(A)
1
4
×
24
\frac{1}{4} \times 24
4
1
×
24
\newline
(B)
2
3
×
24
\frac{2}{3} \times 24
3
2
×
24
\newline
(C)
1
2
×
24
\frac{1}{2} \times 24
2
1
×
24
\newline
(D)
3
4
×
24
\frac{3}{4} \times 24
4
3
×
24
Get tutor help
Which is the most accurate way to estimate
34
%
34\%
34%
of
29
29
29
?
\newline
Choices:
\newline
(A)
3
4
×
28
\frac{3}{4} \times 28
4
3
×
28
\newline
(B)
1
4
×
28
\frac{1}{4} \times 28
4
1
×
28
\newline
(C)
2
3
×
30
\frac{2}{3} \times 30
3
2
×
30
\newline
(D)
1
3
×
30
\frac{1}{3} \times 30
3
1
×
30
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(
8.4
×
1
0
10
)
(
1.6
×
1
0
4
)
\frac{\left(8.4 \times 10^{10}\right)}{\left(1.6 \times 10^{4}\right)}
(
1.6
×
1
0
4
)
(
8.4
×
1
0
10
)
Get tutor help
