49点5÷45+2点09的简便运算?
2个回答
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49.5÷45+2.09
=(45+4.5)÷45+2.09
=1+0.1+2.09
=3.19
=(45+4.5)÷45+2.09
=1+0.1+2.09
=3.19
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回答:
49.5÷45+2.09
=(45+4.5)÷45+2.09
=45÷45+4.5÷45+2.09
=1+0.1+2.09
=3.19
49.5÷45+2.09
=(45+4.5)÷45+2.09
=45÷45+4.5÷45+2.09
=1+0.1+2.09
=3.19
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已踩过<
评论
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