Question 3 (b)
Add without using number line: (–13) + (+18)
(–13) + 18 = -13 + 18 = 5
Question 3 (a)
Add without using number line: 11 + (–7)
Question 3 (f)
Add without using number line: (–217) + (–100)
Question 3 (c)
Add without using number line: (–10) + (+19)
Add without using number line: \((–380) + (–270)\)
Question 3 (d)
Add without using number line: (–250) + (+150)