2.22×9.9+6.6×6.7简算
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2.22×9.9+6.6×6.7简算2.22×9.9+6.6×6.7简算2.22×9.9+6.6×6.7简算2.22×9.9+6.6×6.7=2.22×3.3X3+3.3X2×6.7=6.66X3.3
2.22×9.9+6.6×6.7简算
2.22×9.9+6.6×6.7简算
2.22×9.9+6.6×6.7简算
2.22×9.9+6.6×6.7
=2.22×3.3X3+3.3X2×6.7
=6.66X3.3+13.4X3.3
=(6.66+13.4)X3.3
=20.06 X3.3
=66.198
2.22*（100-1）+（6+0.6）*6.7
后面自己算
2.22×9.9+6.6×6.7简算
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