n
a
b
d
1
3
4
18
24
2
1
4
2
8
3
1
3
7
21
4
4
12
8
24
5
2
5
6
15
6
2
12
14
84
7
2
5
4
10
8
6
7
60
70
9
6
12
42
84
10
8
11
56
77
11
2
8
14
56
12
5
12
10
24
13
2
9
18
81
14
11
12
22
24
15
4
6
32
48
16
7
8
28
32
17
1
10
4
40
18
4
5
36
45
19
2
4
10
20
20
5
7
25
35
21
8
10
48
60
22
5
6
45
54
23
6
10
12
20
24
4
8
28
56
25
4
5
12
15
26
2
12
10
60
27
3
8
30
80
28
5
8
25
40
29
3
6
12
24
30
2
7
6
21
31
9
11
81
99
32
4
8
16
32
33
5
10
45
90
34
9
12
72
96
35
1
5
4
20
36
2
3
16
24
37
5
11
50
110
38
2
3
6
9
39
1
7
4
28
40
1
8
7
56
41
3
7
18
42
42
5
10
30
60
43
1
2
10
20
44
3
12
12
48
45
1
6
3
18
46
8
12
72
108
47
3
11
27
99
48
3
11
15
55
49
8
9
56
63
50
8
10
40
50
51
1
7
10
70
52
1
9
9
81
53
8
11
32
44
54
2
7
20
70
55
8
10
80
100
56
1
9
10
90
©Ms. Garcia Math
Name:
ID:
Quiz:
Grade:
Find the missing number in the given proportions
?
Cross multiply
Solve for the variable
Verify your answer
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