能简算要简算的题 计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4-5/8 4/5-(3/10+1/6) 5/9+7/18+4/9 1-2/7-5/7
计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4-5/8 4/5-(3/10+1/6) 5/9+7/18+4/9 1-2/7-5/7
计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4-5/8 4/5-(3/10+1/6) 5/9+7/18+4/9 1-2/7-5/7
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-(3/10+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
=0
2/3+5/13+1/3
=1+5/13
=18/13;
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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
计算下面各题,能简算的要简算 3/1+7/2—4/1 5/4—(15/2+9/1) 5/3+3/1
3/1+7/2—4/1
1/3-1/4+2/7
=28/84-21/84+12/84
=19/84
答
用简便方法计算下面各题.5/8*12*3/4,4/7*5/6*6,(1/5+3/4)*20,(5/6+2/9)*36,12*(3/4--1/2),
11/12+5/8+3/8+1/12 5-3/7-4/7 2/5*20+3/5*20 5/6-1/40.25+2/5) =3.4-0.4-0.25 =3-0.25 =2.75 7/8-7/27-20/
计算下面各题:1/9÷1/6÷3/5=? 2/5÷4/7×5/7=? (5/12+1/27)×27+5/8=?
1/9÷1/6÷3/5
=1/9×6×5/3
=10/9
=1又1/9
2/5÷4/7×5/7
=2/5×7/4×5/7
=1/2

(5/12+1/27)×27+5/8
=5/12×27+1/27×27+5/8
=45/4+1+5/8
=12又7/8
计算,能简算的简算。 12/7-8/3+3/2, 4/3+6/5-9/7, 5/3+(4/3-6/1), 2/1+5/1——10/3.
12/7-8/3+3/2=5/7+1/2-2/3=23/42(把12/7-8/3+3/2都化成带分数再整数部分和分数部分分别相加减)
4/3+6/5-9/7=1+(1/3+1/5-2/7)=1又26/105
5/3+(4/3-6/1)=5/3+4/3-6=3-6=-3
2/1+5/1-10/3=2+5-3-1/3=3又2/3
能简算的要简算,18×4/17 (3/4+5/8)×24 5/9×1/3+5/9×5/3 5/4×1/8×24
18×4/17
=(17+1)*4/17
=17*4/17+1*4/17
=4+4/17
=4又4/17
(3/4+5/8)×24
=3/4*24+5/8*24
=18+15
=33
5/9×1/3+5/9×5/3
=5/9*(1/3+5/3)
=5/9*2
=10/9
=1又1/9
5/4×1/8×24
=15/4
=3又3/4
计算下面各题,能简算的要简算:1/3×1/15+1/3×1/5 3/4-5/8×3/4 (4/5-
3/4-5/8×3/4=3/4×(1-5/8)=3/4×3/8=9/32
(4/5-2/3)×15/8=4/5×15/8-2/3×15/8=3/2-5/4=6/4-5/4=1/4
14/25÷(1/5+1/2)=14/25÷1/5+14/25÷1/2=14/25×(5+2)=14/25×7=98/25
24×22/23+1/23=(23+1)×22/23+1/23=23×22/23+1×22/23+1/23=22+1=23
计算下面各题能简算的要简算 1/4+(5/8-3/10)×1/13 5/8×4/3+5/8÷3
1/4+(5/8-3/10)×1/13
=1/4 +(25/40-12/40)×1/13
=1/4+13/40 ×1/13
=10/40 +1/40
=11/40
原式=5/8×4/3+5/8×4/3
=2×(5/8×4/3)
=2×5/6
=5/3
脱式计算(能简算的要简算)。 (1)8/12×3/4—1/6÷1/2 (2)5/4×5/6+1/6
(1)8/12×3/4—1/6÷1/2 (2)5/4×5/6+1/6×5/4 (3)32.6×4/5+32.6×20% (4)5/7×1/6+2/7÷6 (5)465×463/464 (6)1/8×3/4+1/8×1/4
6÷ 3/8 – 3/8 ÷6 4/7 × 5/9 + 3/7 × 5/9 5/2 -( 3/2 + 4/5 ) 7/8 + ( 1/8 + 1/9 ) 9 × 5/6 + 5/6
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