问题标题:
求解答下面的数学题.要步骤!15X12X25270÷4512X10548X2585X99+8599X56+5685X201-8599X63要步骤啊!
问题描述:
求解答下面的数学题.要步骤!
15X12X25270÷4512X10548X2585X99+8599X56+5685X201-8599X63要步骤啊!
舒迪前回答:
15X12X25
=15x3x4x25
=15x3x100
=45x100
=4500
270÷45
=10x3x9÷(5x9)
=6
12X105
=12x5x21
=60x21=1260
48x25
=4x25x12
=100x12
=1200
85x99+85
=85x(99+1)
=85x100=8500
99x56+56
=56x(99+1)=5600
85x201-85
=85x(201-1)
=85x200=17000
99x63
=100x63-63
=6300-63=6234
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