①437-43-57
②125×72×8
③275+25÷25+35
④99×27+27
⑤17×36-36×7
⑥127-[(27+36)÷9]
①76.48﹣(16.48+9.6)
②101×79
③209+102÷(52﹣35)
④250×43×4
①25×66×4
②80.5-19.26-20.74
③156÷[312-(157+142)]
④93×101
⑤(75+75+75+75)×25
⑥840÷6-16×8
=325×100+2
=32500+2
=32502( )
=64×10×2
=640×2
=1280 ( )
① ②