Integers
-5 + -11
-16
9 + ____ = 0
-9
3.4 + -1.2
2.2
1/4
Rewrite as an addition problem:
7 - 15
7 + -15
-12 + 16
4
5 + ___ = -3
-8
-17.4 + -9.3
-26.7
-4/5 + -1/10
-9/10
Rewrite as and addition problem:
-34 - (-99)
-34 + 99
-5
-12 + ____ = -2
10
5.27 - 6.8
-1.53
-1/3 + 5/6
You must simplify!!
-1/2
What three "words" helps us remember how to change any subtraction problem to an addition problem?
Keep , Change, Change
or
Add The Opposite
Write the addition equivalent (equal) number sentence then solve:
27 - (-40)
addition number sentence: 27 + 40
Answer: 67
-2 + ____ = -14
-12
Write equivalent (equal) addition number sentence then solve:
-54.24 - 20.1
Addition Number Sentence: -54.24 + - 20.1
Answer: -74.34
-2/4 - (-7/8)
3/8
The submarine starts at 0 (sea level), there are 4 floats added and 7 anchors added. What is the ending position of the submarine?
-3
Write the addition equivalent (equal) number sentence then solve:
-54 - (-42)
Addition Number Sentence: - 54 + 42
Answer:-12
-4 - ____ = 10
-14
Write the addition equivalent sentence then solve:
-34.67 - (-22.99)
Addition Number Sentence: -34.67 + 22.99
Answer: -11.68
-1/6 - 2/12
You must simplify!!!
-1/3
The submarine starts at -4 ft. If 4 floats are removed, and 10 anchors are added. What is the ending position of submarine?
-18 feet