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Addition
Subtraction
Multiplication
Division
Decimals
100
x + 4 = 25
What is 21
100
x - 2 = 6
What is 8
100
9x = 27
What is 3
100
y/6 = 2
What is 12
100
m + 3.7 = 4.5
What is 0.8
200
a + 13 = 17
What is 4
200
d - 7 = 9
What is 16
200
7x = 63
What is 9
200
x/4 = 14
What is 56
200
x - 2.5 = 101.5
What is 104
300
n - 8 = 14
What is 22
300
k - 4 =121
What is 125
300
5e = 400
What is 80
300
x/6 = 6
What is 36
300
5.6 = 2.1 + x
What is 3.5
400
x + 36 = 100
What is 64
400
x - 32 = 50
What is 82
400
11x = 275
What is 25
400
28 = a/13
What is 364
400
c + 3.3 = 6.6
What is 3.3
500
27 = c + 13
What is 14
500
a - 163 = 392
What is 555
500
21y = 756
What is 36
500
80 = x/15
What is 1200
500
1.6 = y - 6.2
What is 7.8