Answer:
A.
1.(-5) +(-5) = -10
2.(6) +(-2) = 4
3.(3) +(1) = 4
4.7 + 1 = 8
5.-8 + 2 = -6
B.
1. 16 - 12 = 4
2. 5 - 2 = 3
3. 10 - 5 = 5
4. (-2) - (-5) = -3
5. 12 - (-2) = 14
Step-by-step explanation:
Addition of Integers Using Signed Tiles
Let( + ) represents +1; ( - ) represents -1
Now, when we combine one( + ) with one( - ) , they will cancel each other.
However,
when we combine one ( + ) with another ( + ), they will appear as ( + ) ( + ) .
when we combine one ( - ) with another ( + ), they will appear as ( - ) ( - ).
Let's Try!
1.Combine (+) (+)(+)(+)and (+) (+) (+) (+) (+)
Since the first 4 tiles are positive and the next 5 tiles are also positive.
Therefore they will appear as. (+) (+) (+)(+) (+) (+)(+)(+)(+)In symbol: 4 + 5 = 9
2. Combine (-) (-) (-) and (-) (-) (-) (-)
Since the fist 3 tiles are negative and the nest 4 tiles are also negative. Therefore they will appear as (-) (-) (-) (-) (-) (-) (-) , In symbol:(-3) +(-4) = -7
3.Combine (+) (+) (+) (+) (+) and (-) (-) (-)
Since the first 5 tiles are positive and the next 3 tiles are negative. Then the 3 positive tiles and 3 negative tiles will cancel each other. (+) (+) (+) (-) (-) (-)
Therefore the remaining will appear as (+) (+)
in symbol: 5+(-3) = 2
