27.9ⅹ0.37+2.79ⅹ6.3用简便运算?
3个回答
展开全部
27.9×0.37+2.79×6.3
=27.9×(0.37×10)+(2.79×10)×6.3
=27.9×(3.7+6.3)
=279
=27.9×(0.37×10)+(2.79×10)×6.3
=27.9×(3.7+6.3)
=279
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展开全部
27.9×0.37×10+2.79×10×6.3
=27.9×3.7+27.9×6.3
=27.9×(3.7+6.3)
=27.9×10
=279
=27.9×3.7+27.9×6.3
=27.9×(3.7+6.3)
=27.9×10
=279
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