Question
Use a number line to evaluate the following:
(-4) + (+5)
(-4) + (+5)
✓
Answer
$
(-4)+(+5)
$
For -4 move 4 units to the left of 0 , then for +5 move 5 units to the right of -4
$
\therefore(-4)+(+5)=+1 \text {. }
$
(-4)+(+5)
$
For -4 move 4 units to the left of 0 , then for +5 move 5 units to the right of -4
$
\therefore(-4)+(+5)=+1 \text {. }
$
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