简便计算(1)360×52+480×36 (2)999×8+111×28
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360x52+480x36
=36x10x52+480x36
=36x520+480x36
=36x(520+480)
=36x1000
=36000
999x8+111x28
=111x9x8+111x28
=111x72+111x28
=111x(72+28)
=111x100
=11100
=36x10x52+480x36
=36x520+480x36
=36x(520+480)
=36x1000
=36000
999x8+111x28
=111x9x8+111x28
=111x72+111x28
=111x(72+28)
=111x100
=11100
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