问题
解答题
计算大练兵.
322÷7×15
56×17÷7
639÷9×48
225÷9×27.
答案
(1)322÷7×15,
=46×15,
=690;
(2)56×17÷7,
=952÷7,
=136;
(3)639÷9×48,
=71×48,
=3408;
(4)225÷9×27,
=25×27,
=675.
计算大练兵.
322÷7×15
56×17÷7
639÷9×48
225÷9×27.
(1)322÷7×15,
=46×15,
=690;
(2)56×17÷7,
=952÷7,
=136;
(3)639÷9×48,
=71×48,
=3408;
(4)225÷9×27,
=25×27,
=675.