1.28×2.9-0.29×2.9递等式简便计算?
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简便计算
1.28×2.9-0.29×2.9
=(1.28-0.29)x2.9
=0.99x2.9
=(1-0.01)x2.9
=2.9-0.01x2.9
=2.9-0.029
=2.871
1.28×2.9-0.29×2.9
=(1.28-0.29)x2.9
=0.99x2.9
=(1-0.01)x2.9
=2.9-0.01x2.9
=2.9-0.029
=2.871
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原式
=(1.28-0.29)x2.9
=0.99x2.9
=(1-0.01)x2.9
=2.9-0.01x2.9
=2.9-0.029
=2.871
=(1.28-0.29)x2.9
=0.99x2.9
=(1-0.01)x2.9
=2.9-0.01x2.9
=2.9-0.029
=2.871
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已踩过<
评论
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