Các câu hỏi tương tự
Tính nhanh:1/5+4/10+9/15+16/20+1+36/30+49/35+64/40+81/45+
tinh nhanh
1/3x65+1/15x13+1/35+1.63+1/99+1/143+1/195.
(1-1/2)*(1-1/3)*(1-1/4)*(1-1/5)
(1-1/4)*(1-1/9)*(1-16)*(1-1/25)*(1-1/36)
tinh nhanh
1. Tính nhanh
A=1/2+1/6+1/12+1/20+...1/9900
b=1/3+1/16+1/35+1/63+....1/9999
2. Tim phân số bằng nhau
11/2; 10/8; 21/24; 33/36; 14/16; 45/36
giúp mik hết nha cảm ơn !!
Tính nhanh:
a,1/4+2/5+6/8+9/15+8/1
b,1/2+2/4+3/6+4/8+5/10+6/12+7/14+8/16+9/18+10/20
c,1/10+4/20+9/30+16/40+25/50+36/60+49/70+64/80+81/90
Tính nhanh:
a,1/4+2/5+6/8+9/15+8/1
b,1/2+2/4+3/6+4/8+5/10+6/12+7/14+8/16+9/18+10/20
c,1/10+4/20+9/30+16/40+25/50+36/60+49/70+64/80+81/90
1. tinh nhanh: 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128
2. tim x: ( x + 1/2 ) + ( x +1/4 ) + ( x + 1/8 ) + ( x + 1/16 ) = 1
Câu 1 .Tính nhanh :
a ) 7/19 × 8/23 + 7/19 × 15/23 + 1và7/19
b) 75/100 + 18/21 + 49/32 + 1/4 + 3/21 - 17/32
c)8/9 × 15/16 × 24/25 × 35/36 × 48/49 × 63/64
Hộ mình với ạ , mình đang cần gấp. Bạn nào làm đúng mình tick cho
tinh nhanh 1/2+1/4+1/8+1/16+1/32+1/64