566除以一个数所得的商是12，并且除数与余数的差是6，余数是 ．
直接写得数×=×21=×=×= 32×=×=×=×5=
直接写得数．=======（﹣）×30=
直接写出得数． 14×=×5=×= 12×= 3×= 7×= 4.8+0.82= 3﹣2.7=（+2）×9=（﹣）×2=
口算题．×=×=×9=××0=+=×11= 5﹣﹣=×9×7=
口算×15=×2=×=×=×= 1×=×=×34=×=×=×=×=×=×=×=×24=×=×30= 28×=×=
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