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六年级数学5道比的化简、5道拖式计算

六年级数学5道比的化简、5道拖式计算

2025-03-15 22:33:53

推荐回答（1个）

回答1：

80：160=1:2

125:1000=1:8

1.25:10=1:8

50:1000=1:20

10000:1000000=1:100

852+528-369+969
=1380+600
=1980

55×22x100÷50
=11x5x2x11x2
=10x121x2
=2420

25x125x32
=25x4x125x8
=100x1000
=100000

12345679x9x6
=111111111x66
=666666666

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