1樓:淨壇使者
10/9 - 3/4 - 1/4
= 10/9 - ( 3/4 + 1/4 )= 1/9 + 1 - 1
= 1/9
5/13 - 5/14 + 8/13
= 5/13 + 8/13 - 5/14
= 13/13 - 5/14
= 1 - 5/14
= 9/14
2/3 + 2/13 + 1/3 + 11/13= ( 2/3 + 1/3 ) + ( 2/13 + 11/13 )= 3/3 + 13/13
= 1 + 1
= 25/6 - ( 3/4 - 1/6 )= 5/6 + 1/6 - 3/4
= 1 - 3/4
= 1/4
7/8 + 5/16 - 3/16 + 1/8= ( 7/8 + 1/8 ) + ( 5/16 - 3/16 )= 1 + 1/8
= 9/8
2樓:匿名使用者
解:10/9-3/4-1/4=10/9-(3/4+1/4)=1/95/13-5/14+8/13 =5/13+8/13-5/14=1-5/14=9/14
2/3+2/13+1/3+11/13=2/3+1/3+2/13+11/13=1=1=2
5/6-(3/4-1/6)=5/6+1/6-3/4=1/47/8+5/16-3/16+1/8 =7/8+1/8+5/16-3/16=9/8
3樓:匿名使用者
在玩小學生嗎?不知道過程可以從幼兒園上起了
能簡便計算的要用簡便計算4/7+1/14-1/2 5/3-3/8-5/8 3/5+3/11+7/5+11 3/4-{5/6-1/3} 10
4樓:匿名使用者
4/7+1/14-1/2
=4/7-1/2 +1/14
=8/14-7/14+1/14
=(8-7+1)/14
=2/14
=1/7
5/3-3/8-5/8
=5/3-(3/8+5/8)
=5/3-1
=2/3
3/5+3/11+7/5+11 3/4-{5/6-1/3}=3/5+7/5+3/11+11
=2+11+3/11
=13+3/11
=13又311
3/4-{5/6-1/3}
=3/4-5/6+1/3
=9/12-10/12+4/12
=(9-10+4)/12
=3/12
=1/4
2/3+4/9-3/20-1/10-3/4怎樣簡便運算 1/8+5/12+5/6-7/72怎樣簡便運算
5樓:匿名使用者
2/3+4/9-3/20-1/10-3/4=(6/9+4/9)-(3/20+2/20+15/20)=10/9-1
=1/9
1/8+5/12+5/6-7/72
=(1/8-7/72)+(5/12+5/6)=(9/72-7/72)+(5/12+10/12)=1/36+17/12
=1/36+51/36
=52/36
=13/9
遞等式計算 3/4-(2/5+3/10) 5/7+1/4-9/14 3/4+3/6-5/8 5/9
6樓:阿凡達教
4/3—(2/5+3/1o丿=4o/3o一{i2/30+9/3o)=4o/30_21/3o=丨9/30先通分再計算
用簡便方法計算:5/6-4/9+1/6-2/9=? 13/15-7/112/15+6/11=? 7/15-1/4+8/15-3/4=?
7樓:超電炮姐
5/6-4/9+1/6-2/9
=5/6+1/6-4/9-2/9
=1-6/9
=3/9
=1/3
13/15-7/112/15+6/11
這個題你輸錯了吧
應該是 13/15-7/11+2/15+6/11=13/15+2/15-7/11+6/11=1-1/11
=10/11
7/15-1/4+8/15-3/4
=7/15+8/15-1/4-3/4
=1-1
=4/12
=1/3
0.7+11/15-3/10+4/15
=7/10-3/10+11/15+4/15=4/10+1
=1.4
8樓:李佳宇大王
簡便計算:
5/6-4/9+1/6-2/9
=(5/6+1/6)-(4/9+2/9)
=1-2/3
=1/3
13/15-7/11+2/15+6/11
=(13/15+2/15)-(7/11-6/11)=1-1/11
=10/11
7/15-1/4+8/15-3/4
=(7/15+8/15)-(1/4+3/4)=1-1
=011/12-1/18+5/12-17/18=(11/12+5/12)-(1/18+17/18)=4/3-1
=1/3
0.7+11/15-3/10+4/15
=7/10+11/15-3/10+4/15=(7/10-3/10)+(11/15+4/15)=2/5+1
=1又2/5
(望採納,謝謝)
簡便運算:3/4/6-1/6*1/4 13/[1/4+5/6]*3/4 8/9*[3/4-(7/16-1/4)]急急急急幫幫我
78372437簡便運算過程
簡便計算過程方法如下 解 78 37 24 37 78 24 37 102 37 100 2 37 100 37 2 37 3700 74 3774 37x 78 24 37x102 37x 100 2 3700 72 3772 78 37 22 37 2 37 78 22 37 74 100 37...
用遞等式計算,寫出必要的計算過程,能簡便運算的要用簡便方法計
100 870 29 88 100 30 88 18 15 7.5 4.6 6.6 2 4.6 6.6 6.6 6.6 0 3.5 64 12.5 3.5 8 內 8 12.5 28 100 2800 容51 7.5 49 7.5 1 51 49 7.5 1 2 7.5 1 15 1 14 4 4....
脫式計算能簡便運算的要簡便運算
原式 400 37 37 2 8 400 37 8 363 8 371 437 37 2 8 437 74 8 437 37 37 8 400 37 8 363 8 371 脫式計算,能簡便的要簡便。8.2 9.6x0.5 3.7x8.3 0.83x63 1 此題無簡便 計算的方法,脫式計算如下 8...