6.28*7.2+0.28*62.8的简便运算
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6.28*7.2+0.28*62.8的简便运算
6.28*7.2+0.28*62.8的简便运算
6.28*7.2+0.28*62.8的简便运算
6.28*7.2+0.28*62.8
=6.28*7.2+2.8*6.28
=6.28*(7.2+2.8)
=6.28*10
=62.8
6.28*7.2+0.28*62.8
=6.28*7.2+2.8*6.28
=6.28*(7.2+2.8)
=6.28*10
=62.8
6.28*7.2+0.28*62.8
=62.8x0.72+0.28x62.8
=62.8x(0.72+0.28)
=62.8x1
=62.8
6.28*7.2+0.28*62.8
=62.8×0.72+0.28×62.8
=62.8×(0.72+0.28)
=62.8×1
=62.8
6.28*7.2+0.28*62.8
=6.28*7.2+2.8*6.28
=6.28*(7.2+2.8)
=6.28*10
=62.8
6.28*7.2+0.28*62.8
=6.28*(7.2+0.28*10)
=6.28*10
=62.8
6.28*7.2+0.28*62.8的简便运算
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