Các câu hỏi tương tự
8 tháng 5 2022 lúc 7:45
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=
Hãy điền dấu phép tính và dấu ngoặc để có: a) 1 2 3 = 1; b) 1 2 3 4 = 1; c) 1 2 3 4 5 = 1; d) 1 2 3 4 5 6 = 1; e) 1 2 3 4 5 6 7 = 1; f) 1 2 3 4 5 6 7 8 = 1; g) 1 2 3 4 5 6 7 8 9 = 1.
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=?
C=1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9+...+1/999*10000
a/2-3+5-7+9-11+13-15+17
b/1/1×2+1/2×3+1/3×4+1/4×5+1/5×6+1/6×7+1/7+8+1/8×9
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=
1/1*1/2+1/2*1/3+1/3*1/4+1/4*1/5+1/5*1/6+1/6*1/7+1/7*1/8+1/8*1/9+1/9*1/10
Tinh nhanh
A=1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9+1/9*10
A) 4 3/8+5 2/3-9 25/24 B) 2 3/8+1 1/4+3 6/7=3 5/8+3 6/7=7 29/56 C) 2 3/8-1 1/4+5 1/3