题目
计算各题.(能简算的要简算)
5/6+1/6×25%+75%
70%÷(1-3/5×125%)
31/8×35%+0.35×6.125
1/3×5×2/5÷1/3
3/4-5/8×3/4
14/25÷(1/5+1/2)
5/6+1/6×25%+75%
70%÷(1-3/5×125%)
31/8×35%+0.35×6.125
1/3×5×2/5÷1/3
3/4-5/8×3/4
14/25÷(1/5+1/2)
提问时间:2020-07-25
答案
(1)
5/6+1/6×25%+75%
=5/6+1/6×1/4+3/4
=20/24+1/24+18/24
=(20+1+18)/24
=39/24
=13/8
(2)
70%÷(1-3/5×125%)
=0.7÷(1-3/5×5/4)
=0.7÷(1-3/4)
=0.7÷1/4
=0.7×4
=2.8
(3)
31/8×35%+0.35×6.125
=3.875×0.35+0.35×6.125
=0.35×(3.875+6.125)
=0.35×10
=3.5
(4)1/3×5×2/5÷1/3
=1/3÷1/3×5×2/5
=5×2/5
=2
(5)
3/4-5/8×3/4
=3/4×(1-5/8)
=3/4×3/8
=9/32
(6)
14/25÷(1/5+1/2)
=14/25÷(2/10+5/10)
=14/25÷7/10
=14/25×10/7
=4/5
5/6+1/6×25%+75%
=5/6+1/6×1/4+3/4
=20/24+1/24+18/24
=(20+1+18)/24
=39/24
=13/8
(2)
70%÷(1-3/5×125%)
=0.7÷(1-3/5×5/4)
=0.7÷(1-3/4)
=0.7÷1/4
=0.7×4
=2.8
(3)
31/8×35%+0.35×6.125
=3.875×0.35+0.35×6.125
=0.35×(3.875+6.125)
=0.35×10
=3.5
(4)1/3×5×2/5÷1/3
=1/3÷1/3×5×2/5
=5×2/5
=2
(5)
3/4-5/8×3/4
=3/4×(1-5/8)
=3/4×3/8
=9/32
(6)
14/25÷(1/5+1/2)
=14/25÷(2/10+5/10)
=14/25÷7/10
=14/25×10/7
=4/5
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
最新试题
热门考点
- 1all the vogue什么意思及同义词
- 2以下几句话用英语怎么说?
- 3《三峡》和《早发白帝城》都写了三峡猿啼,文中的作用相同吗
- 4搬椅子来坐 I brought a chair by myself to sit on?
- 5repair这个词有没有主动表被动
- 6已知cosx=4-a分之2a-3,且x是第二、三限角,则a的取值范围是什么
- 7设△ABC的三个内角A、B、C对的边分别为a、b、c且a2+b2=mc2(m为常数),若tanC(tanA+tanB)=2tanAtanB,则实数m的值为_.
- 8有一段路,甲走完一小时,乙走完要一又四分之一如果两人相对而行,几小时相遇
- 9已知实数x,y满足y≤xx+y≤1y≥−1,则目标函数z=2x-y的最大值为( ) A.-3 B.12 C.5 D.6
- 10大唐无双2破碎生命之球是什么