325x32x25简便计算脱式?

作者&投稿:底怨 (若有异议请与网页底部的电邮联系)
25x32x25=?用简便算法怎样计算?~

25x4=100
把32分成4x4x2
25x4x25x4x2=100x100x2=20000

32×25
=8×4×25
=8×100
=800

解:分析题意,将325分解成300+25 ,将8分解成8x4,将25分解成5x5,所以原式
=(300+25)8x4x5x5
=(300+25)(8x5)(5 x4)
=(300+25)40x20
=(300+25)800
=240000+20000
=260000

脱式计算:
325x32x25
=325×(4×8)×25
=(325×8)×(4×25)
=2600×100
=260000

(325×2)×4×(4×25)=650×400=260000

325×32×25=65×5×4×8×25=65×4000=260000

325×32×25
=325×8×4×25
=325×4×2×100
=1300×200
=260000

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125x32x25的简便计算
答:如图