用简便计算548-16.3-148-3.7
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用简便计算548-16.3-148-3.7
用简便计算548-16.3-148-3.7
用简便计算548-16.3-148-3.7
548-16.3-148-3.7
=(548-148)-(16.3+3.7)
=400-20
=380
548-16.3-148-3.7
=548-148-(3.7+16.3)
=400-20
=380
548-16.3-148-3.7
=(548-148)-(16.3+3.7)
=400-20
=380
548-16.3-148-3.7
=548-148-(3.7+16.3)
=400-20
=380
548-16.3-148-3.7
=(548-148)-(3.7+16.3)
=400-20
=380