你会用,简便方法计算下面各题吗,360乘52加,480乘36,999乘8加111乘28
3个回答
2016-04-25
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你会用,简便方法计算下面各题吗,360乘52加,480乘36
=36x(520+480)
=36x1000
=36000
999乘8加111乘28
=999x8+111x8+111x20
=(999+111)x8+2220
=1000x8+2220
=8000+2220
=10220
=36x(520+480)
=36x1000
=36000
999乘8加111乘28
=999x8+111x8+111x20
=(999+111)x8+2220
=1000x8+2220
=8000+2220
=10220
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