1/(2/3)/(3/4)/(4/5)/(5/6) 数学 用简便方法计算
1/(2/3)/(3/4)/(4/5)/(5/6) 数学 用简便方法计算
1/(2/3)/(3/4)/(4/5)/(5/6)
=1÷(2/3)÷(3/4)÷(4/5)÷(5/6)
=1 × 3/2 × 4/3 × 5/4 × 6/5
=1×6/2
=3
简便计算1、 5/9*(3/4/1/10) 2、 28/13-(2/13+3/5) 3、 4/5/(6*5/9+2/9)
5/9×(3/4÷1/10)
=5/9×3/4×10
=25/6
28/13-(2/13+3/5)
=28/13-2/13-3/5
=2-3/5
=1又2/5
4/5÷(6×5/9+2/9)
= 4/5×9/32
=9/40
用简便方法计算.30*(3/10+7/15),2又1/2*4/15+1/3*5/2+2/5*5/2,4/5*3/8*5/4,5/8*4+5/8*3+5/8
1/5+7/15+4/15 =3/15+7/15+4/15 =14/15 7/10-(3/4-2/5)=1-27/99+55/99 =1+28/99 =1又28/99 请在4天内发给我! ..
简便计算 3/2×3/4×4/5×5/6×……×98/99×99/100 1/2+1/
第一个1/50,第二个转化成1/2+(1/2-1/3)+(1/3-1/4)+…+(1/6-1/7),去掉括号相消,得到答案1-1/7=6/7
1/2/3/4/5/6/1/2/3/4/5/6
9
1/(2/3)/(3/4)/(4/5)/....../(1999*2000)简便方法
1/(2/3)/(3/4)/(4/5)/....../(1999/2000)=2000/2=1000
简便方法计算。 (1/4-0.1÷2)*5/13+1÷1又1/12 25*1/3*2/5*3/10
您好:
(1/4-0.1÷2)*5/13+1÷1又1/12
=(1/4-1/20)x5/13+ 1x12/13
=1/5x5/13+12/13
=1/13+12/13
=1
25*1/3*2/5*3/10
=(25x2/5)x(1/3x3/10)
=10x1/10
=1
如果本题有什么不明白可以追问,如果满意记得采纳
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用简便方法计算:(-2010 3/4)+(-2009 5/6)+2008 1/3-(-2007 1/2)
=(-2010-2009+2008+2007)+(-3/4-5/6+1/3-1/2)
=(-2000-2000+2000+2000)+(-10-9+8+7)+(-3/4+1/3)-(5/6+1/2)
=0+(-4)-1-4/3
=-5 4/3
1/(2/3)/(3/4)/(4/5)/(5/6)如何计算
一个数除以分数等于乘以他的倒数。所以
1/(2/3)/(3/4)/(4/5)/(5/6)
=1*(3/2)*(4/3)*(5/4)*(6/5)
交叉化简
=1*(6/2)
=3
用简便方法计算(-1/2)*(-2/3)*(1-1/4)*(-1又1/3)*(-1又4/5)
(-1/2)*(-2/3)*(1-1/4)*(-1又1/3)*(-1又4/5)
=(-1/2)*(-2/3)*(3/4)*(-4/3)*(-9/5)
=[(1/2)(2/3)]*[(3/4)(4/3_]*(9/5)
=(1/3)*1*(9/5)
=3/5