0.45×12×0.2 7.09×10.8-0.8×7.09 0.63×101
(1.5+0.35)×0.4 3.2×2.5×12.5 4.87×2.34+48.7×0.266
①7.25÷1.25÷8
②1.8×25+24÷1.5
③99×0.24+9.9×7.6
④0.175÷0.25×0.4
⑤3.74+0.625÷25
⑥0.68÷(5.2 -3.5)×1.25
①
②
③
④
①1204+879+121
②74×60%+×25+0.6
③1.2÷×(0.6﹣)
④×[﹣(+)]
①15.28﹣3.6﹣3.4
②()×7.2
④7.5÷[(6.8﹣4.3)×0.12]
①3.86+6.4+2.14+7.6
②5.2÷0.32﹣0.12
③()×15
⑤
⑥