根据运算顺序,在算式中加上括号(1)745与255的和乘567与345的差,积是多少?(2)1200除以56与94的和,再乘4的积,商是几?
(1)(745+255)×(567-345),
=1000×222,
=222000;
答:积是222000.
(2)1200÷[(56+94)×4],
=1200÷[150×4],
=1200÷600,
=2;
答:商是2.
故答案为:(745+255)×(567-345),1200÷[(56+94)×4].
=1000×222,
=222000;
答:积是222000.
(2)1200÷[(56+94)×4],
=1200÷[150×4],
=1200÷600,
=2;
答:商是2.
故答案为:(745+255)×(567-345),1200÷[(56+94)×4].
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