五年级分数简算100道

范司佳4111我需要二十道小学五年级的分数加减法简便运算急急急急急急
康严毅13834979305 ______ 1) 4/14 8/14=6/7 2) 7/10 2/10=9/10 3) 4/7-3/7=1/7 4) 3/14 7/14=5/7 5) 4/11 5/11=9/11 ... 96) 2/15 3/15=1/3 97) 5/12-1/12=1/3 98) 2/10 4/10=3/5 99) 11/14-8/14=3/14 100) 3/8 ...

范司佳4111五年级分数简便计算:1/(10*12)+1/(12*14)+1/(14*16)+1/(16*18)怎么简便运算啊 -
康严毅13834979305 ______[答案] 1/(10*12)=1/2(1/10-1/12) 1/(10*12)+1/(12*14)+1/(14*16)+1/(16*18) =1/2(1/10-1/12+1/12-1/14+1/14-1/16+1/16-1/18) =1/2(1/10-1/18) =1/45

范司佳4111小学五年级数学分数简算试题 -
康严毅13834979305 ______ 1. 5/2 -( 3/2 + 4/5 ) 2. 7/8 + ( 1/8 + 1/9 ) 3. 5/6 + ( 1/2 + 2/3 ) 4. 9/7 - ( 2/7 - 10/21 ) 5. 3/7 + 49/9 + 4/7 6. 8/9 + 15/36 + 3/27 7. 5/2 - ( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9/7 - ( 2/7 - 10/21 )10. 1/5 + ( 3/7 + 8/10 )1. 1/3 + 3/4 + 1/52. 3/8 + 8/3 - 1/23. 5/6 + 1/...

范司佳4111小学分数加减五年级简算和解方程,一个x的哦,各50道,谁有?如:x - 3\10=1\5,1\8+8\15+7\8+3\15帮忙一下! -
康严毅13834979305 ______[答案] X=3+5/10 X=2

范司佳4111小学五年级分数加减混合简算急急急 - 5/4 - 9/20+11/30
康严毅13834979305 ______ 5/4-9/20+11/30-13/42+15/56-17/72+19/90-21/110 =5/4-﹙1/4+1/5﹚+﹙1/5+1/6﹚-﹙1/6+1/7﹚+﹙1/7+1/8﹚-﹙1/8+1/9﹚+﹙1/9+1/10﹚-﹙1/10+1/11﹚ =5/4-1/4-1/5+1/5+1/6-1/6-1/7+1/7+1/8-1/8-1/9+1/9+1/10-1/10-1/11 =5/4-1/4-1/11 =1-1/11 =10/11

范司佳4111【急】求小学五年级分数简算题 -
康严毅13834979305 ______ 3/5-1/4+2/5-3/4 =(3/5+2/5)-(1/4+3/4) =1-1 =0 7/15-(4/15+2/25) =(7/15-4/15)-2/25 =1/5-2/25 =5/25-2/25 =3/25

范司佳4111有没有五年级分数简便计算题? -
康严毅13834979305 ______ 计算题.(共20分) 1、 直接写出得数.(每题0.5分) 1460÷4= 0÷14987794515415 = 0.375*0.625= * = 1÷124 = 124÷4 = 5*20%÷5*20%= 124 -102 = 2、 解下列方程.(每题2分)...

范司佳4111五年级分数加减法的简便运算只要分数加减法,简便计算的,每题不超过三个分数 -
康严毅13834979305 ______[答案] 1/4+1/82/3-1/63/7+5/142/5-2/157/8-9/161/32+1/42/9+7/93/4-9/1625/32-3/83/5+13/1523/25+1/521/25-1/53/14+2/72/3+1/95/7-3/147/9+1/1819/21+3/723/35-1/53/4+1/163/8-1/165/9+4/98/17-7/17

范司佳4111五年级下册分数的简便计算. -
康严毅13834979305 ______ 5/6+(1/6-3/4)2/5-4/11+(3/5+4/11)8/7-1/14-13/143/4-5/8+5/64/5-(1/6+3/10)2/3+4/5-3/103/7-(9/14-1/2)2/7+3/8+5/83/7+5/6+4/73/10+3/4+7/102/5-1/6+2/34/9+3/4+5/97/8+2/7+1/8

范司佳4111五年级分数简便计算:1/(10*12)+1/(12*14)+1/(14*16)+1/(16*18)怎么简便运算啊 -
康严毅13834979305 ______ 1/(10*12)=1/2(1/10-1/12)1/(10*12)+1/(12*14)+1/(14*16)+1/(16*18)=1/2(1/10-1/12+1/12-1/14+1/14-1/16+1/16-1/18)=1/2(1/10-1/18)=1/45