六年级的数学题,分数四则混合运算简便算法
一定要简便!题:5/9X(9/5+18)13/14-15/28÷5/8(5/6-3/4)÷3/85/9X5/6+4/9÷6/54÷4/5-4/5÷47/11÷[2/5-(...
一定要简便!
题:5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/5
4÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)} 展开
题:5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/5
4÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)} 展开
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第一题乘法分配律分别乘,11
第二题先算除法,化到12/14,再减,1/14
第三题分配
第四题先把后面变成4/9*5/6,再提取5/6,分配律,5/6
第五题变成4*5/4-4/5*1/4,直接算,四又五分之四
第六题先算中括号里的,再算外面,70/11
第二题先算除法,化到12/14,再减,1/14
第三题分配
第四题先把后面变成4/9*5/6,再提取5/6,分配律,5/6
第五题变成4*5/4-4/5*1/4,直接算,四又五分之四
第六题先算中括号里的,再算外面,70/11
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题:5/9X(9/5+18) 5/9X5/6+4/9÷6/5
=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6
=1+10 =(5/9+4/9)×5/6
=11 =1×5/6
=5/6
13/14-15/28÷5/8 4÷4/5-4/5÷4
=13/14-15/28×8/5 =4×5/4-4/5×1/4
=13/14-3/7×2 =5+1/5
=13/14-6/7 =26/5
=1/14
(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}
=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]
=5/6×8/3-3/4×8/3 =7/11÷1/10
=20/9-2 =70/11
=2/9
=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6
=1+10 =(5/9+4/9)×5/6
=11 =1×5/6
=5/6
13/14-15/28÷5/8 4÷4/5-4/5÷4
=13/14-15/28×8/5 =4×5/4-4/5×1/4
=13/14-3/7×2 =5+1/5
=13/14-6/7 =26/5
=1/14
(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}
=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]
=5/6×8/3-3/4×8/3 =7/11÷1/10
=20/9-2 =70/11
=2/9
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5/9X(9/5+18) 5/9X5/6+4/9÷6/5
=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6
=1+10 =(5/9+4/9)×5/6
=11 =1×5/6
=5/6
13/14-15/28÷5/8 4÷4/5-4/5÷4
=13/14-15/28×8/5 =4×5/4-4/5×1/4
=13/14-3/7×2 =5+1/5
=13/14-6/7 =26/5
=1/14
(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}
=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]
=5/6×8/3-3/4×8/3 =7/11÷1/10
=20/9-2 =70/11
=2/9
=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6
=1+10 =(5/9+4/9)×5/6
=11 =1×5/6
=5/6
13/14-15/28÷5/8 4÷4/5-4/5÷4
=13/14-15/28×8/5 =4×5/4-4/5×1/4
=13/14-3/7×2 =5+1/5
=13/14-6/7 =26/5
=1/14
(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}
=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]
=5/6×8/3-3/4×8/3 =7/11÷1/10
=20/9-2 =70/11
=2/9
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