True or False
Opposites always equal a positive when added.
False - Zero
-9 + 6 =
-3
-2 - 5 =
-7
(-3)(-9) =
27
-45/9
-5
a negative + a negative = a negative
a positive + a positive = a positive
True
2/5 + 3/10 =
7/10
3/8 - 2/4 =
-1/8
-4/7 * 2/3
-8/21
-4/9 / -1/2 =
8/9
When Multiplying you must always Keep Change Change
False - Subtraction
-32.3 + -22.1 =
-54.4
50 - 77.3 =
-27.3
2.25 * -5
-11.25
2.7 / .9
3
When multiplying and dividing fractions you must find a common denominator.
False - Adding and Subtracting
45.6 + (-56.4) =
-10.8
-33.6 - 45.2 =
-78.8
3.67 * 1.9
6.973
-11.39 / 2.7
-4.2
When adding and Subtracting decimals You must line up decimals
True
Carter had -$75 in his bank account. He bought a gift card for $25. He then made a deposit into his account of $125. How much money is now in Carter's account?
$25
There is a pole in the middle of the lake. The top of the pole is 25 feet above sea level. The bottom of the pole is 13 feet below sea level. What is the distance from the top of the pole to the bottom?
38 feet
-3/7 * 5/2 =
-1 1/14
4/5 / -3/2 =
-8/15