①
②
③
④
⑤
⑥
0.48÷0.3= 36- = 2.5×40= ×(15+ )=
684+198= 12×1%= × = ×9÷ =
①15.28﹣3.6﹣3.4
②()×7.2
④7.5÷[(6.8﹣4.3)×0.12]
①3.25×3.6+7.75×3.6﹣3.6
②9.9×25
部分,发现=,=;再根据 , 可以推出和的大小关系是。
①0.83+1.675 ②756+1328 ③+ ④57%+