1樓:匿名使用者
5/6+3/4-1/3= 10/12+9/12-4/12 = 15/12 = 5/4 (讀作:四分之五
)4/5+7/10-13/20= 16/20 + 14/20 -13/20 = 17/20 (讀作:二十分之十七)
7/8-5/12+1/6= 21/24 - 10/24 + 4/24 = 15/24 = 5/8 (讀作:八分之五)
2樓:匿名使用者
6/5+4/3-3/1
=18/15+20/15-45/15
=-7/15
5/4+10/7-20/13
=455/364+520/364-560/364=415/364
8/7-12/5+6/1
=40/35-84/35+11760/35=11716/35
3樓:匿名使用者
《精》 原式=6/5+(4/3-1/3)=6/5+1=11/5
《銳》 原式=(5×91+10×52-20×50)/(4×7×13) =5×(91+104-200)/(4×7×13)=5×(-5)/364=-25/364
原式=1+1/7+6-2-2/5=5+1/7-2/5=5-9/35=166/35
4樓:匿名使用者
13/15 315/234 簡單麻煩
計算下面各題,能簡便計算的要簡便計算。 3/5+3/4-5/6 8/9+2/7+5/7 15/8-3/4-1/4 = = = = = =
5樓:吃葷的兔子
3/5+3/4-5/6 8/9+2/7+5/7 15/8-3/4-1/4
=36/60+45/60-50/60 =8/9+1 =15/8-1
=31/60 =17/9 =7/8
9/7-1/6+3/7 7/4-12/23-3/4 5-6(3/8+1/6)
= 12/7-1/6 = 1-12/23 =5-(9/4+1)
= 72/42-7/42 =11/23 =7/4
=65/42
計算下面各題能簡算的要簡算 5/6-1/2+1/4 5/12+3/4-5/8 4...
6樓:隋小魯霽
5/6-1/2+1/4
=5/6-1/4=10/12-3/12;=7/12;5/12+3/4-5/8
=10/24+18/24-15/24=13/24;4/5-(copy3/10+1/6)=24/30-9/30-5/30=10/30=1/3;
5/9+7/18+4/9=(5/9+4/9)+7/18=1+7/18=25/18;
1-2/7-5/7=1-(2/7+5/7)=1-1=02/3+5/13+1/3=1+5/13=18/13;如果本題有什麼不明白可以追問,
計算下面各題,能簡算的要簡算。 45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7
7樓:匿名使用者
45×(3/5+5/9) = 45×8/9 = 40
3/14÷【6/7×(1/3+1/4)】= 3/14÷【6/7×12/7】= 3/14÷2 = 3/28
(7/3+7/4-7/12)×6/7 = 7/3×6/7+7/4×6/7-7/12×6/7 = 2+3/2-1/2 = 3
(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16 = 1/3*16/7 = 16/21
1/9×3+1/9×5+1/9 = 3/9+5/9+1/9 = 9/9 = 1
7/8×3/7+7/8 = 3/8+7/8 = 10/8 = 5/4
(1/2+11/8×3/2)÷1/2 = (1/2+11/8×3/2)×2 = 1/2×2+11/8×3/2×2 = 1 + 33/8 = 41/8
(1/3+1/5+1/15)×15 = 1/3×15 +1/5×15+1/15×15 = 5+3+1 = 9
計算下面各題能簡算的要簡算 1.3/4×3/5+2/5×3/4= = = = 2.8×5/6+2/
8樓:滄海烏雲
1.3/4×zhi3/5+2/5×3/4
=1/4x 1/5 x3(
dao1.3+2)
版=3/20 x3.3
=9.9/20
=99/200
2.8×5/6+2/5÷
權4=14/5 x 5/6 +2/5 x 1/4=2/5 (7 x 5/6 + 1/4)
=2/5(70/12 + 3/12)
=2/5 x 73/12
=73/30
計算下面各題,能簡便計算的要簡便計算。 2/5-1/6+2/3 1-1/4+2/5 1/2+5/6-1/3 8/9-5/9+1/6
9樓:鞠翠花喻書
你這個中間卻符號啊,
2/5-1/6+2/3
()1-1/4+2/5()
1/2+5/6-1/3()
8/9-5/9+1/6
如果是算四道題的話。
2/5-1/6+2/3
=2/5+(4/6-1/6)=2/5+1/2=7/101-1/4+2/5=3/4+2/5=23/20=1-0.25+0.4=1.15=23/20
8/9-5/9+1/6=(8/9-5/9)+1/6=1/3+1/6=1/2
這個內真的沒有什麼很大的技巧性容。
用簡便方法計算下列各題 5/3+4/1+5/2 12/11-(6/1-12/1)
10樓:樂為人師
3/5+1/4+2/5
=(3/5+2/5)+1/4
=1+1/4
=1又1/4
11/12-(1/6-1/12)
=11/12+1/12-1/6
=1-1/6
=5/6
3/7+(5/6+4/7)
=3/7+4/7+5/6
=1+5/6
=1又5/6
9/5-(9/4+10/1)
5/9-(4/9+1/10)
=5/9-4/9-1/10
=1/9-1/10
=1/90
9/16+3/8+7/16+1/8
=(9/16+7/16)+(3/8+1/8)=1+1/2
=1又1/2
4/9+3/5+5/9+1/2
=(4/9+5/9)+(3/5+1/2)
=1+11/10
=2又1/10
計算下面各題,能簡算的要簡算一計算下面各題,能簡算的要簡算。
2 3 1 4 5 12 32 2 3 32 1 4 32 5 12 32 21又1 3 8 13又1 3 13又1 3 13又1 3 26又2 3 7.05 30 65 0.75 0.75 0.75 300 65 0.75 0.75 1 0.75 300 65 1 0.75 364 259.5 1...
計算下面各題能簡算的要簡算。
簡便計算過程方法如下 解 10.7 0.2 1.9 8.62 10.7 0.38 8.62 10.7 0.38 8.62 10.7 9 1.7 原式 10.7 0.38 8.62 10.7 0.38 8.62 10.7 9 1.7 希望採納,謝謝 原式 10.7 0.38 8.62 10.7 9 1...
計算下面各題,能簡算的要簡算
1 6 1 5 6 5 1 6 6 5 1 5 5 6 1 5 1 6 5 6 11 1 6x6x5十1 5x6x5 5十6 計算下面各題,能簡算的要簡算。45 3 5 5 9 3 14 6 7 1 3 1 4 7 3 7 4 7 12 6 7 45 3 5 5 9 45 8 9 40 3 14 6...