4\/5*4+2\/5*2+1\/5*16=?介个怎么简算? 能不能讲一下方法.
4\/5*4+2\/5*2+1\/5*16=4\/5x4+4\/5x1+4\/5x4=4\/5x(4+1+4)=4\/5x9=36\/5
4\/5x4+2\/5x2+1\/5x16用简便方法计算`
所以可得 1\/5x(4x4+2x2+16)=1\/5x36=36\/5
4\/5乘以4加2\/5乘2加1\/5分之乘16用简便方法计算
您好:4\/5乘以4加2\/5乘2加1\/5分之乘16 =1\/5x16+1\/5x4+1\/5x16 =1\/5x(16+4+16)=1\/5x36 =36\/5 如果本题有什么不明白可以追问,如果满意请点击“好评”或“采纳为满意回答”如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢.祝学习进步!
4\/5 x4+2\/5x2+1\/5x16 简便计算
=16*1\/5+4*1\/5+16*1\/5 =1\/5(16+4+16)=1\/5*36 =36\/5 =7.2
4\/5x4+2\/5x2+1\/5x16等于多少?脱式计算,用简便方法。
4\/5x4+2\/5x2+1\/5x16 =16\/5+4\/5+16\/5 =36\/5 =7.2
...二乘以二加五分之一乘以十六 怎么用简便方法计算?(记住没有括号哦...
4\/5×4+2\/5×2+1\/5×16=16\/5+4\/5+16\/5=(16+4+16)\/5=36\/5=7又1\/5=7.2
5\/4×4+5\/2×2+1\/5×16用简便方法计算
5/4 × 4 + 5/2 × 2 + 1/5 ×16 =5/4 × 4 + 5/2 ×2+ 1/5 × (15 +1)=5/4 × 4 + 5/2 ×2+ 1/5 × 15 + 1/5 ×1 =5+5+3+1/5 =13又1/5
4\/5×4+2\/5×2+1\/5×16
4\/5×4+2\/5×2+1\/5×16=1\/5*16+1\/20*16+1\/5*16 =16*(1\/5+1\/20+1\/5)=16*9\/20 =36\/5(7.2)分数乘法运算法则 1、分数乘整数时,用分数的分子和整数相乘的积做分子,分母不变。能约分的要先约分。2、分数乘分数时,用分子相乘的积做分子,分母相乘的积做分母,能约分的...
用简便方法计算下面各题。 (1)5分之4x4+5分之2×2+5分之1x16 = =...
=5分之4x4+5分之4+5分之4x4 =5分之4x(4+1+4)=5分之4x9 =7.2 (2) 2014分之2013×2013 =(1-1\/2014)×2013 =2013-1\/2014×2013 =2013-2013\/2014 =2012又1\/2014 99x25分之9 =(100-1)×9\/25 =100×9\/25-9\/25 =36-9\/25 =35又16\/25 ...
4\/5×2\/5+4\/5×2\/5×1\/2怎么算?
=4\/5×2\/5(1+1\/2)=8\/25×3\/2 =12\/25 这道题目可运用乘法分配律进行简便计算。『简便运算定律』定律 乘法分配律 简便计算中最常用的方法是乘法分配律。乘法分配律指的是ax(b+c)=axb+axc其中a,b,c是任意实数。相反的,axb+axc=ax(b+c)叫做乘法分配律的逆运用(也叫提取公约数),...