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列式计算.(1)66个25相加的和除以25的22倍,商是多少?(2)乙数是2940,是甲数的14倍,乙数比甲数多几
列式计算.(1)66个25相加的和除以25的22倍,商是多少?(2)乙数是2940,是甲数的14倍,乙数比甲数多几?(3)一个数被50除,得商128,余数是36,求这个数...
列式计算.(1)66个25相加的和除以25的22倍,商是多少?(2)乙数是2940,是甲数的14倍,乙数比甲数多几?(3)一个数被50除,得商128,余数是36,求这个数.(4)51除5610的商比72的2倍少多少?
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(1)25×66÷(25×22),
=1650÷550,
=3;
答:商是5.
(2)2940-2940÷14,
=2940-210,
=2730;
答:乙数比甲数多2730.
(3)128×50+36,
=6400+36,
=6436;
答:这个数是6436.
(4)72×2-5610÷51,
=144-110,
=34;
答:少34.
=1650÷550,
=3;
答:商是5.
(2)2940-2940÷14,
=2940-210,
=2730;
答:乙数比甲数多2730.
(3)128×50+36,
=6400+36,
=6436;
答:这个数是6436.
(4)72×2-5610÷51,
=144-110,
=34;
答:少34.
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