One-Step Equation (Addition)
What inverse operation would you use to solve the equation, x + 7 = 13
subtraction
What inverse operation would you use to solve the equation, x - 7 = 13
addition
What inverse operation would you use to solve the equation, t x 7 = 21
division
What inverse operation would you use to solve the equation, x รท 4 = 4
multiplication
Amy's new puppy weighed 7 pounds at his first visit to the vet. At a recent visit to the vet, the puppy weighed in at 15 pounds. How much did the puppy gain between visits?
Write the equation.
p + 7 = 15
a + 9.2 = 24.7
a=15.5
x - 10 = 24
x=34
5b = 15
b=3
x/12 =11
b=132
How do you divide decimals?
Keep Change Flip
By moving the decimal in the divisor (outside #) to not have a decimal, then doing the same to the dividend
m + 89 = 108
m=19
m - 27.5 = 94.0
m=121.5
2d = 150
d=75
p/4 = 15
p=60
What is a variable?
A letter that stands/represents an unknown number
k + 78.99 = 88.00
k=9.01
p - 89.88 = 108.99
p=198.87
6.3c = 94.5
c=15
g/16 = 120
g=1,920
Name the operations and the inverse of each
add-subract
subract-add
multiply-divide
divide-multiply
z+2/3=9
Z=8 1/3
e-2 1/2= 5 1/3
E= 7 5/6
1.4e = 84
e=60
g/2.56= 12
g=30.72
3x + 4 = 28
x = 8