Add & Subtract Variables Within 20 - Math Worksheet With Answer Key
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30Name:
Add & Subtract Variables within 20
Find the value of the letter.
A n s w e r s
7
7
1) 20 - 13 = B
B =
1.
13
13
2) 20 = 7 + A
A =
2.
5
5
3) E = 4 + 1
E =
3.
15
15
4) 14 + 1 = K
K =
4.
2
2
5) 5 = Y + 3
Y =
5.
2
2
6) V + 18 = 20
V =
6.
4
4
7) 8 = 4 + W
W =
7.
15
15
8) F = 19 - 4
F =
8.
4
4
9) J + 9 = 13
J =
9.
12
12
10) 7 = L - 5
L =
10.
20
20
11) S = 9 + 11
S =
11.
16
16
12) M - 15 = 1
M =
12.
4
4
13) 12 = G + 8
G =
13.
3
3
14) 12 - 9 = Z
Z =
14.
6
6
15) 13 - Q = 7
Q =
15.
2
2
16) 14 + C = 16
C =
16.
15
15
17) 11 = H - 4
H =
17.
13
13
18) 8 + 5 = N
N =
18.
5
5
19) 12 + U = 17
U =
19.
9
9
20) 3 = 12 - R
R =
20.
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