Adding and Subtracting Larger Numbers
Last updated at October 8, 2025 by Teachoo
Transcript
Question (a) to (g) - Figure it out Page 251 Complete these expressions. (a) (+40) + ______ = +200Now, (+40) + ______ = +200 ______ = (+200) – (+40) ______ = 200 – 40 ______ = 160 Thus, (+40) + (+160) = +200 Question (a) to (g) - Figure it out Page 251 Complete these expressions. (b) (+40) +_______= –200 Now, (+40) + ______ = –200 ______ = (–200) – (+40) ______ = –200 – 40 Taking – common ______ = –(200 + 40) ______ = –240 Thus, (+40) + (–240) = –200 Question (a) to (g) - Figure it out Page 251 Complete these expressions. (c) (–50) + ______ = +200Now, (–50) + ______ = +200 ______ = (+200) – (–40) ______ = 200 + 50 ______ = 250 Thus, (–50) + (+250) = +200 Question (a) to (g) - Figure it out Page 251 Complete these expressions. (d) (–50) +_______= –200Now, (–50) + ______ = –200 ______ = (–200) – (–50) ______ = –200 + 50 Taking – common ______ = –(200 – 50) ______ = –150 Thus, (–50) + (–150) = –200 Question (a) to (g) - Figure it out Page 251 Complete these expressions. (e) (–200) – (–40) = _______Now, (–200) – (–40) = _______ –200 + 40 = _______ Taking – common –(200 – 40) = _______ –160 = _______ Thus, (–200) – (–40) = (–160) Question (a) to (g) - Figure it out Page 251 Complete these expressions. (f) (+200) – (+40) = _______Now, (+200) – (+40) = _______ 200 – 40 = _______ 160 = _______ Thus, (+200) – (+40) = (+160) Question (a) to (g) - Figure it out Page 251 Complete these expressions. (g) (–200) –(+40) = _______Now, (–200) – (+40) = _______ –200 – 40 = _______ Taking – common –(200 + 40) = _______ –240 = _______ Thus, (–200) – (+40) = (–240)