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999×22.2+66.6×66.7,简便运算? 5
2个回答
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99.9×22.2+66.6×66.7
=(33.3x3)x22.2+66.6×66.7
=33.3x66.6+66.6×66.7
=(33.3+66.7)x66.6
=100x66.6
=6660
希望能帮到你!
=(33.3x3)x22.2+66.6×66.7
=33.3x66.6+66.6×66.7
=(33.3+66.7)x66.6
=100x66.6
=6660
希望能帮到你!
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