20 questions
Nine more than a number
9x
9 - x
9 + x
9 + 9
The difference of five and a number
5 - m
5/m
5 + m
5 - 5
seven divided by a number
7/n
n/7
49/7
n/n
The product of a number and twelve
x/12
x - 12
12 + x
12x
A number increased by five.
5x
x + 5
x + x + x + x + x
5 + 5
Five less than a number.
5 - n
n - 5
5n - x
5 + x
The quotient of 6 and a number
6/x
x/6
6x
6 - x
Half of a number
x / y
2 / x
2x
x / 2
The sum of six and a number
6 + p
6 - p
p + p
6p
A number decreased by ten
10x
x/10
10 - x
x - 10
Eleven less than three times a number
11x - 3
3 - 11x
11 - 3x
3x - 11
Fifty divided by two times a number
100/2
50/2x
2x/50
50x/2
Three times a number is twenty-one.
3x + 21
3x - 21
3x • 21
3x = 21
Four times a number increased by seven
4 + 7x
4x - 7
4x + 7
4 - 7x
A number increased by seventeen is twenty-two.
17x = 22
x + 17 = 22
x/17 = 22
x + 17 + 22
Twice a number is seventy-six.
2 + x = 76
2x = 76
x/2 = 76
2 + x = 66
Twelve less than a number is thirty.
12 - x = 30
30 - 12 = x
12/x = 30
x - 12 = 30
Six is fifteen less than three times a number.
6 = 3x - 15
6 = 15 - 3x
6 - 15 = 3x
15 - 6 = 3x
Sixty divided by four times a number
60/4x
60x/4
6x/4
6/4x
Twice a number, decreased by nineteen
2x - 19
2(x -19)
x/2 - 19
(x-19)/2