12.3乘以556加24.6乘以222用递等式最简便的方法算
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12.3乘以556加24.6乘以222用递等式最简便的方法算
12.3乘以556加24.6乘以222用递等式最简便的方法算
12.3乘以556加24.6乘以222用递等式最简便的方法算
12.3x556+24.6x222
=12.3x556+12.3x444
=12.3x(556+444)
=12.3x1000
=12300
12.3乘以556加24.6乘以222用递等式最简便的方法算
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