1) 1 3/4-1 3/8:(3/8+9/20
2) 4 7/8-3 11/12:( 5/6+1 1/8)
3) 8 2/3:(6 2/3-4 1/2)-2 37/51
1+1/2+1/3+1/4+......+1/8+1/9
________________________=
1/1*9+1/2*8+1/3*7+........+1/8*2+1/9*1
1+1/2+1/3+1/4+....+1/8+1/9+1/10
1/1*10+1/2*9+1/3*8+......+1/8*3+1/2*9+1/10*1
a,4 3/8 + 5 2/3
b,2 3/8 + 1 1/4 + 3 6/7
2 3/8 - 1 1/4 + 5 1/3
(1/2+0.25+1/4)nhan ( 1/8+1/2+1/8+25/100) nhan (0.75+1/2)+0.50+1/4+0.55+45/100)
32+8+2 +1/2+1/8+...+1/512
1+1+1+1+2+2+2+3+3+3+3+4+4+4+4+5+5+5+5+6+6+6+6+7+7+7+7+8+8+8+8+9+9+9+9+10=
So sánh nào dưới đây là đúng:
\(\dfrac{1}{4}>\dfrac{2}{8}\)
\(\dfrac{1}{4}< \dfrac{2}{8}\)
\(\dfrac{1}{4}=\dfrac{2}{8}\)
8-1*0/2+2+1/9-1/8*0+93658648948
a) 1/3 : 2/7 + 8/2 × 1/3
b) 3/2 - 1/9 : 1/8 + 9/10