Question

Answer 1

\(1.=\left(125.8\right).27\\ =1000.27=27000\\ 2.=\left(163+37\right)+\left(18+82\right)\\ =200+100=300\\ 3.=\left(287+513\right)+\left(121+79\right)\\ =800+200=1000\)

Answer 2

4: \(=17\left(34+39+27\right)=17\cdot100=1700\)

5: \(=4\cdot5^2-4=4\cdot24=96\)

6: \(=2^5\cdot100=3200\)

7: \(=7^2+6^2+10^2-4\cdot16=121\)