Addition
1 + 5
6
10 - 4
6
1/2 x 3/4
3/8
-45 / 9
-5
Pos x Pos = ?
Pos
-2 + (-4)
-6
20 - 20
0
7 x (-4)
-28
-15 / -4
3.75 or 3 3/4
Neg / Pos = ?
Neg
12 + (-12)
0
-8 - 4
-12
-5 x -3
15
What is the difference between a terminating and repeating decimal?
Terminating- Comes to an end.
Repeating- Goes on forever and repeats
Addition Rule: For adding two integers with the same sign (both pos or both neg) you ____(1)______ and ____(2)______
1. Find the sum
2. Keep the same sign
-7 + 3
-4
-9 - (-2)
-7
12.5 x (-9)
-112.5
3/4
2/3
9/8 = 1 1/8
Subtraction Rule: Sometimes we subtraction is the ____(1)____ of the _____(2)_____.
1. Addition
2. Opposite
Sam has $25.50. On his birthday his grandmother gives him $10. He then goes to the Milford Post Mall and buys a new toy for 13 1/4 dollars. How much money does he have left if he wants to stop at the food court for lunch?
25.50 + 10 + (-13.25) = $22.25
Sam will have $22.25 to spend at the food court.
When I got to my car one morning I noticed that it was 46 degrees. As I continued to drive I noticed that temperature dropped 7 degrees. By the time I reached school it dropped another 2 degrees. What was the temperature by the time I reached school?
46 - 7 - 2 = 37 degrees
The temperature is 37 degrees.
If Sam's remote control car can go 6.5 feet in 1 second, how far will it go in 15 seconds?
6.5 x 15 = 97.5 feet
The car will travel 97.5 feet.
110 / 5 = $22 each.
Everyone will get $22.
Addition Rule: When you add two numbers that have different signs, you ____(1)______ then _____(2)_____.
1. Find the difference
2. Use sign of larger absolute value.