简便计算99.9x111十33.3×66.7?
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99.9*111+33.3*66.7的简便运算
=33.3*3*111+33.3*66.7
=33.3*(3*111+66.7)
=33.3*(333+66.7)
=33.3*399.7
=33.3*(400-0.3)
=33.3*400-33.3*0.3
=13320-9.99
=13310.01
=33.3*3*111+33.3*66.7
=33.3*(3*111+66.7)
=33.3*(333+66.7)
=33.3*399.7
=33.3*(400-0.3)
=33.3*400-33.3*0.3
=13320-9.99
=13310.01
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这个题目可以用乘法分配律的逆定理,把33.3提出来计算即可,又因为99.9=33.3×3,所以就有:
99.9×111+33.3×66.7
=33.3×3×111+33.3×66.7
=33.3×(333+66.7)
=33.3×399.7
=13310.01
所以,这个题目算出来的答案为13310.01
99.9×111+33.3×66.7
=33.3×3×111+33.3×66.7
=33.3×(333+66.7)
=33.3×399.7
=13310.01
所以,这个题目算出来的答案为13310.01
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99.9×111+33.3×66.7
=33.3×3×111+33.3×66.7
=33.3×333+33.3×66.7
=33.3×(333+66.7)
=33.3×399.7
=33.3×(400-0.3)
=33.3×400-33.3×0.3
=13320-9.99
=13320-9.99=13310.01
=33.3×3×111+33.3×66.7
=33.3×333+33.3×66.7
=33.3×(333+66.7)
=33.3×399.7
=33.3×(400-0.3)
=33.3×400-33.3×0.3
=13320-9.99
=13320-9.99=13310.01
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简便计算方法是:
99.9x111+33.3x66.7
=33.3x3x111+33.3×667
=33.3(333+66.7)
=33.3x399.7
=13310.01
99.9x111+33.3x66.7
=33.3x3x111+33.3×667
=33.3(333+66.7)
=33.3x399.7
=13310.01
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