除数是4，被除数是27，商是几？余数是几？
口算题．×=×=×9=××0=+=×11= 5﹣﹣=×9×7=
口算×15=×2=×=×=×= 1×=×=×34=×=×=×=×=×=×=×=×24=×=×30= 28×=×=
直接写出得数×15=×2=×=×= 1×=×=×34=×=×=×=×=×=
计算． 1×4.8 2×3.5 2.3×1 2×0.63．
口算：×15=×2=×=×=×= 1×=×=×34=×=×=×=×=
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