Question

Michael is using a number line to evaluate the expression –8 – 3. After locating –8 on the number line, which step could Michael complete to evaluate the expression?

Answer 1

He have to move 3 unit in left hand direction of -8 on number line.

Explanation:

The Given Expression is -8 - 3.

To evaluate the Expressions using number line following steps to be followed:

Step 1: Locate the first number or term.

Step 2: to further proceed with next number some rules to be used.

a). if next term is positive then move in right hand direction of

previous term on number line.

b). if next term is negative then move in left hand direction of

previous term on number line .

Step 3: Follow step 2 till last term.

Here michale already located -8 on number line. Now he have to move 3 unit in left hand direction of -8 on number line because next term is -3. (Number line attached)

Answer 2

-8 - 3= -11 [ If we add two negative integers , we just have to add them using simple law of addition and apply the negative sign before it.]

If you are adding [-8-3=-11] on the number line mark -8 on the number line and the next number have negative sign before it , so we should move 3 units to left on the number line which gives the result -11.

I have drawn the number line below.