Add the following without using a number line: $(- 250) + (+ 150)$

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Solution

To add two integers of opposite signs ignore the signs first, subtract the number with smaller numerical value from the bigger numerical value. Now put the sign of number with bigger numerical value.
$(- 250) + (+ 150) = - 250 + 150 = - 100$ . (250 has bigger numerical value)

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Question 3 (d)

Add without using number line:
(–250) + (+150)

1 + (- 7)

(- 13) + (18)

(- 10) + (19)

(- 250) + (150)

(- 380) + (- 270)

(- 217) + (- 100)

Add without using a number line: (f) $(- 270) + (- 100) .$ .

Add without using number line:

(a) 11 + (− 7)

(b) (− 13) + (+18)

(d) (− 250) + (+ 150)

(e) (− 380) + (− 270)