6.35-0.7×2.9简便运算？
3个回答
展开全部
6.35-0.7×2.9
=6.35-0.7x(3-0.1)
=6.35-0.7x3+0.7x0.1
=6.35-2.1+0.07
=4.25+0.07
=4.32
=6.35-0.7x(3-0.1)
=6.35-0.7x3+0.7x0.1
=6.35-2.1+0.07
=4.25+0.07
=4.32
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展开全部
6.35一0.7×2.9
＝6.35一2.03
＝4.32
＝6.35一2.03
＝4.32
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展开全部
6.35-0.7×2.9
=6.35-0.7x(3-0.1)
=6.35-0.7x3+0.7x0.1
=6.35-2.1+0.07
=4.25+0.07
=4.32
=6.35-0.7x(3-0.1)
=6.35-0.7x3+0.7x0.1
=6.35-2.1+0.07
=4.25+0.07
=4.32
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