2 + 4 + 9 + 7 + 5 + 6 + 7 + 8 + 8 + 4 + 6 + 7 + 4 + 6+ 4 + 6 + 6 + 6 + 8 + 4 + 7 + 6 + 7 + 6 = 143
2 + 4 + 9 + 7 + 5 + 6 + 7 + 8 + 8 + 4 + 6 + 7 + 4 + 6+ 4 + 6 + 6 + 6 + 8 + 4 + 7 + 6 + 7 + 6 = 143
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=
8/9÷3/7=
8/9+2/5=
7/8-1/3=
3/10×1/6=
b.hỗn số
1 2/7+6 5/6=
5 3/4-1/5 =
6 2/9÷4 7/10=
5/3+3/2-7/6=
1+2+3+4+5+6++7+8+9+9+8+7+6+5+4+3+2+1+1+2+3+4+5++6+7+8+9=?
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9 +1028 giúp mk nha
Sap xep cac phan so sau theo thu tu tu lon den be
8/9; 4/5; 9/8; 3/4; 10/9; 12/12; 7/8; 1/6; 1/4; 3/2; 1/5; 8/7; 6/5; 5/6; 4/3; 6/7; 2/3; 2/15; 1/2;5/4
1+2+3+4+5+5+5+5+7+8+9+6+3+6+6+7+6+4+6 x12
Điền vào chỗ trống :
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6
4/3/:5/4:6/5:7/6:8/7:9/8