Use counters to subtract 2 − –2.
You start with:
+ +
You subtract:
- -
Which picture shows the difference?
a + + + +
b + +
c - - - - - -
d -
1 answer
c - - - - - -
You start with:
+ +
You subtract:
- -
Which picture shows the difference?
a + + + +
b + +
c - - - - - -
d -
1 answer