如题所述
第1个回答 2020-06-01
1.25x2.5x16 把16拆4x4
=1.25x2.5x4x4
=1.25x4x2.5x4
=5x10
=50
第2个回答 2020-06-01
1.25×2.5×16
=1.25×2.5×8×2
=1.25×8×2.5×2
=(1.25×8)×(2.5×2)
=10×5
=50
=1.25×2.5×8×2
=1.25×8×2.5×2
=(1.25×8)×(2.5×2)
=10×5
=50
第3个回答 2020-06-01
1.25×2.5×16
=1.25×2.5×4×4
=1.25×4×2.5×4
=6×10
=60
第4个回答 2020-06-01
1.25X2.5X16=1.25*2.5*(8*2)=1.25*8*(2.5*2)=10*5=50![](/img.php?b=https://iknow-pic.cdn.bcebos.com/37d3d539b6003af3576d34fd272ac65c1138b65c?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_450%2Ch_600%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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![](/img.php?b=https://iknow-pic.cdn.bcebos.com/eac4b74543a98226df0cc3ba9882b9014b90eb5a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_450%2Ch_600%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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第5个回答 2020-06-01
原式
=1.25x2.5x8x2
=(1.25x8)x(2.5x2)
=10x5
=50
方法二:
原式
=1.25x2.5x4x4
=(1.25x4)x(2.5x4)
=5x10
=50
=1.25x2.5x8x2
=(1.25x8)x(2.5x2)
=10x5
=50
方法二:
原式
=1.25x2.5x4x4
=(1.25x4)x(2.5x4)
=5x10
=50