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.
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.
Jones should draw an arrow starting at 8 and ending at 15. The arrow should be pointing in the negative direction to indicate that Jones needs to move in the negative direction to connect the two numbers. Therefore, the answer is -7.
