Các câu hỏi tương tự
tính nhanh A=1/3-3/4-(-3/5)+1/72-2/9-1/36+1/15
B=1/5-3/7+5/9-2/11+7/13-9/6-7/13+2/11-5/9-3/7-1/5
C1/100-1/100.99-1/99.98-1/98.87-...-1/3.2-1/2.1
1. Tính hợp lí
a, A=11/125-17/18-5/7+4/9+17/14
b, B=1-1/2+2-2/3+3-3/4+4-1/4-3-1/3-2-1/2-1
c, C=1/100-1/100.99-1/99.98.......-1/3.2-1/2.1
tính nhanh :
A = 1/3 - 3/4 -(-3/5) +1/72-2/9-1/36+1/15
B= 1/5 -3/7 +5/9 -2/11+7/13-9/16-7/13+2/11-5/9+3/7 -1/5
C= 1/100-1/100.99- 1/99.98-1/98.97......-1/3.2 - 1.2.1
giup mik voi
B= 1/5 - 1/9 + 1/13 / 9/5 -1 + 9/13 + 10/7-10/11-10/17 / 12/7 - 12 /11 - 12/17
C=1/14 - 1/30 - 1/46 / 2/35 - 2/75 - 2/115 : 3/8 - 15/17 + 30/31 / 1/6 - 20/51 + 40/93
D= 1/100.99 - 1/99.98 - 1/98.97 - ........... - 1/3.2 - 1/2.1
E= ( 1+2+3+.......+100) . ( 1/3-1/5-1/7-1/9) . ( 6,3 .12 - 21 .3,6) / 1/2+1/3+1/4+..........+ 1/100
Tính
a, (-2/3) + 3/4 -(-1/6)+(-2/5)
b, (-2/3) +(-1/5)+ 3/4 - 5/6- (-7/10)
c, 1/2 - (-2/5)+1/3+5/7-(01/6)+(-4/35) +1/41
d, (1/100.99) - (1/99.98)-(1/98.97)-...-(1,3.2)- (1/2.1)
Giúp mình với , mình cần gấp :
a) Tính nhanh :
A = 1/3 - 3/4 - ( - 3/5 ) + 1/72 -2/9 - 1/36 +1/15
b) Tính nhanh :
B = 1/5 - 3/7 + 5/9 - 2/11 + 7/13 - 2/11 - 5/9 + 3/7 - 1/5
c) Tính nhanh :
C = 1/100- 1/100.99 - 1/99.98 - 1/98.97 - ..............- 1/3.2 -1/2.1
a) 1/100.99 - 1/99.98 - 1/98.97 - ........... - 1/3.2 - 1/2.1
b) (1+2+3+.........+100) . (1/3-1/5-1/7-1/9) . (6,3.12-21.3,6)/1/2+1/3+1/4+......+1/100
c)1/4-1/7-1/11phan4/4-4/7-4/11+3/5-3/15-3/125-3/625phan4/5-4/25-4/125-4/625
giải ra hộ mk nha
tính nhanh
C= 1/100-1/100.99-1/99.98-1/98-97-...-1/3.2-1/2.1
Cần gấp mấy bn ơi:>>>
a,-2/3+3/4--1/6+-2/5
b,-2/3+-1/5=3/4-5/6- (-7/6)
c,1/2-(-2/5)+1/3+5/7-(-1/6)+(-4/35)+1/41
d,1/100.99-1/99.98-1/98.97-.....-1/3.2-1/2.1