Rational Numbers
Add these decimals. 21.74 + (-8.27)
13.47
This property allows you to move numbers around in an addition problem without changing the answer.
The Commutative Property of Addition
8 + 3 x 2
48
Write the steps to solve: X + 14 = 35
X + 14 = 35
-14 -14
X = 21
Multiply these decimals. 0.03 * (-5.4)
=0.162
This Property tells you that any number added to 0, stays that number.
Identity Property of addition
5 + 42 x 2
37
Write the steps to solve: X * 9 =72
X * 9 =72
/9 /9
X = 8
Divide these decimals. (-2.1)/(-0.07)
30
The property allows you to move the parenthesis in a multiplication problem, to multiply something first.
Associative Property of Multiplication.
Solve the expression 6 x [2 + (42 - 10)]
48
What is the inverse of - 9?
+ 9
17 - (-25) =
42
True or False: When you use the distributive property you multiply the first factor on the outside of the parenthesis by the second number only.
False
Which operation should be completed first in 6 x (2 + 4)
addition
Show the 3 steps necessary to solve for X. X * 0.3 =-1.8
X * 0.3 =-1.8
/ 0.3 /0.3
X = -6
0.07 * (-0.07) =
-0.0049
This property lets you know that any number multiplied by its recipricol will give you 1.
The Inverse Property of Multiplication
Will this answer be positive or negative?
(-3 + 9)2 + -7 x 8 =
negative
Mia has a pack of fruit snacks with x fruit snacks and 6 extra fruit snacks. Wade has the same amount of fruit snacks as Fischer and he has 23 total, how many fruit snacks are in the pack? Write and show the steps to solve the equation.
x + 6 = 23
- 6 -6
X = 17