计算：728+(272+986)=多少？
1个回答
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728+(272+986) 56×99
=728+272+986 =56×(100-1)
=1000+986 =56×100-56×1
=1986 =5600-56
=5544
125×88 32×125×25
=125×8×11 =4×8×125×25
=1000×11 = (4×25)×(8×125)
=11000 =100×1000
=100000
=728+272+986 =56×(100-1)
=1000+986 =56×100-56×1
=1986 =5600-56
=5544
125×88 32×125×25
=125×8×11 =4×8×125×25
=1000×11 = (4×25)×(8×125)
=11000 =100×1000
=100000
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