3.82X9.9+0.382?要简便计算!
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=0.382×10×9.9+0.382
=0.382×99+0.382×1
=0.382×(99+1)
=0.382×100
=38.2
=0.382×99+0.382×1
=0.382×(99+1)
=0.382×100
=38.2
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3.82x9.9+0.382
=3.82x9.9+3.82x0.1
=3.82x(9.9+0.1)
=3.82x10
=38.2
=3.82x9.9+3.82x0.1
=3.82x(9.9+0.1)
=3.82x10
=38.2
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解:3.82×9.9+0.382
=3.82×9.9+3.82×0.1
=3.82×(9.9+0.1)
=3.82×10
=38.2。
=3.82×9.9+3.82×0.1
=3.82×(9.9+0.1)
=3.82×10
=38.2。
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原式可以化为
3.82×9.9+3.82×0.1
=3.82×(9.9+0.1)
=3.82×10
=38.2
3.82×9.9+3.82×0.1
=3.82×(9.9+0.1)
=3.82×10
=38.2
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