Transcript Multiplication and Division Equations

Multiplication and
Division Equations
SWBAT solve multiplication
equations using the division
property of equality; solve
division equations using the
multiplication property of
equality
Related Operations
 How
are addition and subtraction
related?
– They undo each other, or are inverse
operations
 How
are multiplication and division
related?
– They undo each other, or are inverse
operations
Definitions

Addition property of equality
– When you add the same number to both sides
of an equation, you get a true statement

Subtraction property of equality
– When you subtract the same number to both
sides of an equation, you get a true statement

Multiplication property of equality
– When you multiply the same number to both
sides of an equation, you get a true statement

Division property of equality
– When you divide the same number to both
sides of an equation, you get a true statement
Write the following as an
equation, using y as your
variable.
 An
object on Jupiter weights about
2.6 times its weight on Earth. If a
spacecraft weighs 4914 Newtons on
Jupiter, what is its weight on Earth?
2.6y

= 4914
How can you determine how
much it weighs on earth?
–Divide to get the variable by itself
Examples
 38x
= 760
 1.7c = 25.5
 _b_ = 120
15
 z ÷ 13 = 650
 _x_ = 192
14
 8b = 0.2416
Try the problems on your paper
b
= 0.0302
 d = 138
 d = 164.52
 n = 0.25
 n = 2.5
 f = 147.18