8.6×6.9-34.4简便运算?
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根据题意,这道题的简便运算方法是:原式等于8.6×6.9—8.6×4=8.6×(6.9—4)=8.6×2.9=8.6×(3—0.1)=8.6×3—8.6×0.1=25.8—0.86=24.94
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8.6×6.9-34.4简便运算
34.4=8.6×4
所以原式=8.6×(6.9-4)
=8.6×2.9
=24.94
34.4=8.6×4
所以原式=8.6×(6.9-4)
=8.6×2.9
=24.94
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8.6×6.9-34.4
=8.6*(7-0.1)-34.4
=8.6*7-0.86-34.4
=60.2-35.26
=60-35.06
=24.94
=8.6*(7-0.1)-34.4
=8.6*7-0.86-34.4
=60.2-35.26
=60-35.06
=24.94
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8.6×6.9-34.4
=8.6×6.9-8.6×4
=8.6×(6.9-4)
=8.6×2.9
=8.6×(3-0.1)
=25.8-0.86
=24.94
=8.6×6.9-8.6×4
=8.6×(6.9-4)
=8.6×2.9
=8.6×(3-0.1)
=25.8-0.86
=24.94
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