Jones uses the subtraction algorithm to subtract 8−15 and gets the answer −7. They want to connect this expression and answer to a number line model. How should they complete their number line model to show why the answer is −7?
(2 points)
Jones should draw an arrow starting at
that connects to
. The arrow will show that they need to move
in the negative direction to connect the two numbers. Therefore, the answer is −7.
1 answer
Jones should draw an arrow starting at 8 that connects to 15. The arrow will show that they need to move 7 units in the negative direction to connect the two numbers. Therefore, the answer is −7.