10.1乘以7.
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10.1乘以7.
10.1乘以7.8
=(10+0.1)×7.8
=10×7.8+0.1×7.8
=78+0.78
=78.78
10.1×7.8
=(10+0.1)×7.8
=10×7.8+0.1×7.8
=78+0.78
=78.78
10.1×7.8
=(10+0.1)×7.8
=10×7.8+0.1×7.8
=78+0.78
=78.78
10.1乘以7.8
=(10+0.1)×7.8
=10×7.8+0.1×7.8
=78+0.78
=78.78
这就是运用乘法分配率
10.1乘以7.
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