\(\left(527-34\right)+\left(-150+34-527\right)\)
\(=527-34-150+34-527=\left(527-527\right)+\left(-34+34\right)-150=-150\)
\(367+\left|-550\right|+\left|-33\right|-248-\left|-202\right|\)
\(=367+550+33-248-202=\left(367+33\right)-\left(248+202\right)+550=500\)
\(231.72+769.87+231.15=231\left(72+15\right)+769.87=87\left(231+769\right)=87000\)