Question

use the number line to subtract.
-6 - (-4)
(a) draw two arrows to show -6 - (-4).
-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0
(b) -6 - (-4) = \square

Explanation:

Part (b) Solution:

Step1: Recall subtraction rule

Subtracting a negative is adding its positive: $-6 - (-4) = -6 + 4$.

Step2: Perform addition

Start at -6, move 4 units right (since we add 4). $-6 + 4 = -2$.

Answer:

$-2$