6.42ⅹ4.6+5.1ⅹ6.42简算?
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6.42*4.6+5.1*6.42
=6.42*(4.6+5.1)
=6.42*9.7
=6.42*(10-0.3)
=6.42*10-6.42*0.3
=64.2-1.926
=62.274
=6.42*(4.6+5.1)
=6.42*9.7
=6.42*(10-0.3)
=6.42*10-6.42*0.3
=64.2-1.926
=62.274
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原式=6.42ⅹ(4.6+5.1)
=6.42ⅹ9.7
=6.42ⅹ10-6.42ⅹ0.3
=64.2-1.926
=62.274
=6.42ⅹ9.7
=6.42ⅹ10-6.42ⅹ0.3
=64.2-1.926
=62.274
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=6.42×(4.6+5.1)=6.42×9.7=6.42×(10-0.3)=64.2-1.926=62.274
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2021-11-17
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运用乘法分配律,简便运算如下:
6.42×4.6+5.1×6.42
=6.42×(4.6+5.1)
=6.42×9.7
=6.42×(10-0.3)
=6.42×10-6.42×0.3
=64.2-1.926
=62.274
6.42×4.6+5.1×6.42
=6.42×(4.6+5.1)
=6.42×9.7
=6.42×(10-0.3)
=6.42×10-6.42×0.3
=64.2-1.926
=62.274
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6.42×4.6+5.1×6.42
=6.42×(4.6+5.1)
=6.42×9.7
=6.42×(10-0.3)
=6.42×10-6.42×0.3
=64.2-1.926
=62.274
=6.42×(4.6+5.1)
=6.42×9.7
=6.42×(10-0.3)
=6.42×10-6.42×0.3
=64.2-1.926
=62.274
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