1+2+3+4+5+6+7+8+9+10+11+12+13-1-2-3-4-5-6-7-8-9-10-11-12
tính nhanh
1+3-5+7-9+12-3+10-1-3+3-12=
Nếu 5+3=8 ; 12+5 = 78; 9+7 =27 thi 10+3 =?
Tính:
11 + 2 – 3 = … | 12 + 3 – 5 = … |
13 + 6 – 9 = … | 14 + 5 – 3 = … |
10 + 7 – 4 = … | 15 + 3 – 3 = … |
3+2×3÷4+1+2+3+4+5+6+7+8+9+1×12×3×4×5
Tính nhanh
a 2\9+1\5+7\9+4\5
b19\37+(1+19\37)
c 9\8-(17/7-3/7)+7/8
d 3/5x8/27x5/3
e 7/19x1/3+7/19x2/3
f 12/5x4-4x7/5 trả lời nhanh tick luôn
4 - 3 =
5 - 3 =
8 - 3 =
7 - 3 =
6 - 3 =
9 - 3 =
10 - 3 =
11 - 3 =
12 - 3 =
1+2+3+4+5+6+7+8+9-12=?
1+2+3+4+5+6+7+8+9+10+11+12