Integer Rules
(adding) When Signs are the same...
you add
-25 + -2
-27
-3 + 4
1
mike won $25, lost $4, got paid $150
$171
diver @ -12 below sea level ascends 7 ft.
-5 ft. below sea level
All subtraction turns into
addition
(-21) + (-22)
-43
17 + (-17)
0
package included 12 marbles and Johnny lost 3
9 marbles
the water level @ 5 inches, it increased by 3 inches, then leaked 1 inch
7 inches
to subtract you must
add the opposite
-99
+-(99)
-198
-21 + (21)
0
Johnny's points earned during the game -5, +7, +7, +2, -6, -1.
4 points
the bird flew 7 miles east 2 miles west then 5 miles east.
10 miles east
(adding) when signs are different you
subtract
won 5 points and 12 points
17 points
09 + (-03)
6
Jenny sold 42 boxes, 12 were returned, she sold 9 more but 2 more were returned
37 boxes
jumped 3 feet high next time 2 feet higher and last time 2 feet higher than that
7 feet
Which sign do you keep for your answer
the one from the biggest number
-$125 balance + -$31 bill paid
-$156
-19 + 8
-11
the shuttle flew 1000 miles into space and descended 22 miles & increased elevation 5 miles.
983 miles into space
from home ran 4 blocks north 2 blocks south 1 block north.
3 blocks north