1楼:匿名用户
7.7*1016/7.7*12.5
=1016/12.5
=10160/125
=10160/125
=2032*5/5*25
=2032/25
=2032/(100/4)
=2032*4/100
=8128/100
=81.28
8x(125-7)用递等式计算,怎么简便就怎么计算请帮我解答。谢谢!
2楼:匿名用户
用乘法分配律简算
8×(125-7)
=8×125-8×7
=1000-56
=944
3楼:橙那个青
递等式计算
=125*8-8*7
=1000-56
=944
2-5/12÷7/24+2/7 简便计算(递等式,要过程)
4楼:弯弓射雕过海岸
2-5/12÷7/24+2/7
=2-5/12x24/7+2/7
=2-10/7+2/7
=2-8/7
=6/7
5楼:匿名用户
2-5/12÷7/24+2/7
=2-5/84/24+2/7
=2-5/2016+2/7
=2-5/2016+576/2016
=2+571/2016
=2又571/2016
6楼:学习教育
2- 5 ÷ 7 + 2
12 24 7
=2- 5 ×24+ 2
12 7 7
=2-10+ 2
7 7
=2-8
7= 67
7×7÷7×7递等式
7楼:李快来
解:7x7÷7x7
=49÷7x7
=7x7
=497×7÷7×7递等式计算结果是:49
8楼:大燕慕容倩倩
原式=49/7*7=7*7=49
7.9*12.5的递等式计算法怎么做
9楼:匿名用户
7.9*12.5
=(8-0.1)*1.25
=10-1.25
=8.75
用递等式计算(能简算的要简便计算) 0.175÷0.25×4.27.52-(7.7-2.48)+32.7.3.2×(2.5+12.5)6.8×
10楼:挚爱慧莹uj卑
(1)0.175÷0.25×4
=0.7×4
=2.8
(2)27.52-(7.7-2.48)+32.7=27.52-7.7+2.48+32.7
=(27.52+2.48)+(32.7-7.7)=30+25
=55(3)3.2×(2.5+12.5)
=3.2×2.5+3.2×12.5
=0.8×(4×2.5)+0.4×(8×12.5)=0.8×10+0.4×100
=8+40
=48(4)6.8×3.7-3.7+37×0.42=6.8×3.7-3.7+3.7×4.2
=(6.8-1+4.2)×3.7
=10×3.7
=37(5)[(7.6-5.8)×0.8-1]×5.5=[1.8×0.8-1]×5.5
=[1.44-1]×5.5
=0.44×5.5
=2.42
(6)(7.8+2.2×5)÷(4-3.06)=(7.8+11)÷0.94
=18.8÷0.94=20
(5/7x4/7 4/7)÷4/7用递等式计算,怎么做?高手们,教教我好吗?
11楼:瀛洲烟雨
(5/7x4/7 +4/7)÷4/7
=(20/49+28/49)×7/4
=48/49×7/4
=12/7
递等式计算(能简便的用简便方法).12.5×(0.7×0.8)70.8-0.8×0.513-3.79+6
12楼:百度用户
(1)12.5×(0.7×0.8),
=12.5×0.8×0.7,
=10×0.7,
=7;(2)70.8-0.8×0.5,
=70.8-0.4,
=70.4;
(3)13-3.79+6.21,
=9.21+6.21,
=15.42;
(4)12.5×(40+0.7),
=12.5×8×5+12.5×0.7,
=500+8.75,
=508.75;
(5)4.12-1.78-1.22,
=4.12-(1.78+1.22),
=4.12-3,
=1.12;
(6)4.2÷0.7÷6,
=4.2÷(0.7×6),
=4.2÷4.2,=1.
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