Addition / Subtraction Equations
x + 4 = 25
What is 21
Work: x + 4 - 4 = 25 - 4
Samantha has 5 more points than Henry does. Write an expression to show how many points Henry has.
What is "S - 5"
9x = 27
What is 3
9x/9 = 27/9
y/6 = 2
What is 12
y/6 * 6 = 2 * 6
10 - 5x + 3 if x = 1
What is 8
a + 13 = 10
What is -3
Work: a + 13 - 13 = 10 - 13
When counting the number of movies in her movie collection, Avery finds that she has 5 more than twice the amount that her brother has. Write an expression to show how many movies Avery has.
What is 2b + 5
7x = -63
7x/7 = -63/7
What is -9
x/4 = -14
What is -56
x/4 * 4 = -14 * 4
What is 52
n - 8 = -14
What is -6
Work: n - 8 + 8 = -14 + 8
Ethan weighs 15 pounds less than Seth. Write an expression to show how many pounds Seth weighs.
What is e + 15
5e = -400
What is -80
5e/5 = -400/5
x/6 = -6
What is -36
x/6 * 6 = -6 * 6
4x2 / 2 if x = 3
What is 18
k - (-83) =121
What is -136
Work: k - (-83) + (-83) = 121 + (-83)
or k + 83 - 83 = 121 - 83
Julianna had a certain amount of candy that she distributed among her 4 friends. Write an expression showing how much candy Julianna has left. What number does she have left if she began with 28 pieces.
What is C/4
7 pieces left
-11x = 275
What is -25
-11x/-11 = 275/-11
-28 = a/13
What is -364
a/13 * 13 = -28 * 13 or
-28 * 13 = a/13 * 13
x3 - 8x if x = 4
What is 32
-27 = c - 27
What is 0
Work:
c - 27 + 27 = -27 + 27
or -27 + 27 = c - 27 + 27
Amazon sells a specific brand of headphones for 11 dollars per pair and charges 4 dollar shipping no matter how many ordered. Write an expression and find how much 3 pairs would cost.
What is 11h + 4 and $37
-21y = -756
What is 36
-21y/-21 = -756/-21
-80 = x/-5
What is 400
-80 * -5 = x/-5 * -5
3x3 - x2 +2 if x = 3
What is 74