Question

Write an addition expression and write a subtraction expression represented by the number line. Then evaluate the expressions.

Answer 1

Hint: On a number line, Moving toward the right side means positive and moving toward the left side means negative.

Step 1: In the given number line blue arrow is toward the right side, so it shows addition Mathematically, we can write

Addition expression as $0+5$

Step 2: In the given number line red arrow is toward the left side, so it shows subtraction Mathematically, we can write

Subtraction expression as $5-1$

Step 3: On evaluating the expression, we get $0+5-1=+4$

Final Answer: Addition expression as $0+5$

Subtraction expression as $5-1$

On evaluating the expression, we get $0+5-1=+4$

Hence, the evaluating the expression is $4$