209 208×16怎么简便计算?
4个回答
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209+208×16简便计算如下:
209+208×16
=209+208+208×5+208×10
=417+(2080+1040)
=417+3120
=3537
209+208×16
=209+208+208×5+208×10
=417+(2080+1040)
=417+3120
=3537
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展开全部
209+208×16
=208+1+208×16
=208×(1+16)+1
=208×17+1
=208×(20-3)+1
=208×20-208×3+1
=4160-618+1
=3543
=208+1+208×16
=208×(1+16)+1
=208×17+1
=208×(20-3)+1
=208×20-208×3+1
=4160-618+1
=3543
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展开全部
209+208*16
=208*(16+1)+1
=208*17+1
=3536+1
=3537
=208*(16+1)+1
=208*17+1
=3536+1
=3537
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