3个回答
展开全部
2.39✘4.3+239✘4.57
=239×0.043+239×4.57
=239×(0.043+4.57)
=239×4.613
=1102.507
=239×0.043+239×4.57
=239×(0.043+4.57)
=239×4.613
=1102.507
展开全部
你的题目应该是这样吧
2.39×4.3+23.9×4.57
=2.39×4.3+2.39×45.7
=2.39×(4.3+45.7)
=2.39×50
=119.5
2.39×4.3+23.9×4.57
=2.39×4.3+2.39×45.7
=2.39×(4.3+45.7)
=2.39×50
=119.5
展开全部
2.39×4.3+23.9×4.57
=2.39×4.3+2.39×45.7
=2.39×(4.3+45.7)
=2.39×50
=119.5
=2.39×4.3+2.39×45.7
=2.39×(4.3+45.7)
=2.39×50
=119.5
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