248-(48+53) 32×(200+3) 539-278-22
23×54+45×23 36×101-36 630÷42
①308×25=
②26×632=
③648÷57=
④*332÷43=
⑤526÷64=
⑥120×42=
⑦4050÷70=
⑧*336×12=
630÷18÷5 25×(8+20) 125÷[(568+82)÷26]
①9.37+4.83+5.17
②0.56+0.56×99
③0.4×9.2×2.5
④18.7×0.76-0.76×8.7