Evaluate the expression for
y = 2 and z = 3
y + z = ?
y + z = ?
2 + 3 = 5
12 + a = 17
a = ?
a = 5
12 + 5 = 17
variable is a letter used as a placeholder in a math problem
variable takes the place of a mystery amount in a math problem
14 - 12 = a
a = ?
a = 2
because 14 - 12 = 2
a + b + c = d
Solve for d
d = 137
because 25 + 100 + 12 = 137
a = 7 and b = 3
a + b = ?
a + b = ? if a = 7 and b = 3
7 + 3 = 10
2 + b = 28
b = ?
2 + 26 = 28
b = 26
If b + 3 = 21, what is the value of b?
b = 18
because 18 + 3 = 21
25 - b = 25
b = ?
b = 0
because 25 - 0 = 25
12p = 48
solve for p
p = 4
because 12(4) = 28
d = 12 and e = 14
d + e = ?
12 + 14 = 26
a + 45 = 49
a = ?
4 + 45 = 49
a = 4
If James bought x amount of oranges and 12 apples, with 15 pieces of fruit all together, how many oranges did he buy?
x = 3
because 15 - 12 = 3
and 12 + 3 = 15
x - 100 = 75
x = ?
x = 175
because 175 - 100 = 75
y = 38x if x = 2
y = ?
y = 76
because 38(2) = 76
x = 17 y = 20
z = x + y
17 + 20 = 37
z = 37
b + 3 + 3 = 12
b = ?
6 + 3 + 3 = 12
b = 6
In the equation:
a + 3 = 23, what is the value of a?
a = 20 because 20 + 3 = 23
and 23 - 3 = 20
127 - c = 2
c = ?
c = 125
because 127 - 125 = 2
12a + 2a + 7b = c if a = 2 and b = 3
c = ?
c = 49
because 12(2) = 24, 2(2) = 4, 7(3) = 21.....
24 + 4 + 21 = 49
a = 2 b = 12 c = 9
a + b + c = ?
a + b + c = ?
2 + 12 + 9 = 23
x + 3 + 12 = 20
x = ?
5 + 3 + 12 = 20
x = 5
I can check my multiplication by using __________.
I can check division by using multiplication.
I can check multiplication using division.
y = ?
y = 3
because 128 - 125 = 3
z = ?
z = 54
because 2(8) = 16, 19(2) = 38 , 20(0) = 0
16 + 38 = 54