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列竖式计算 1.06x2.5 28÷16 19.4÷12~(保留两位小数)
1个回答
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1.06×2.5
=1.06×(5×0.5)
=1.06×5×0.5
=5.3×0.5
=2.65
28÷16
=28÷(4×4)
=28÷4÷4
=7÷4
=1.75
19.4÷12
=19.4÷(3×4)
=19.4÷3÷4
=6.2÷4
=2.54
=1.06×(5×0.5)
=1.06×5×0.5
=5.3×0.5
=2.65
28÷16
=28÷(4×4)
=28÷4÷4
=7÷4
=1.75
19.4÷12
=19.4÷(3×4)
=19.4÷3÷4
=6.2÷4
=2.54
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谢谢
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