Adding and Subtracting Larger Numbers
Last updated at October 8, 2025 by Teachoo
Transcript
Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: a. –125 + (– 30) –125 + (– 30) = –125 – 30 Taking – common = –(125 + 30) = –155 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: b. + 105 – (– 55)+ 105 – (– 55) = 105 + 55 = 160 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: c. + 105 + (+ 55)+ 105 + (+ 55) = 105 + 55 = 160 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: d. + 80 – (– 150) + 80 – (– 150) = 80 + 150 = 230 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: e. + 80 + (+ 150) + 80 + (+ 150) = 80 + 150 = 230 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: f. – 99 – (– 200) – 99 – (– 200) = –99 + 200 = 200 – 99 = 101 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: g. – 99 + (+ 200) – 99 + (+ 200) = –99 + 200 = 200 – 99 = 101 Question (a) to (h) - Page 251 bottom Try evaluating the following expressions by similarly drawing or imagining a suitable lift: h. + 1500 – (– 1500) + 1500 – (– 1500) = 1500 + 1500 = 3,000