Các câu hỏi tương tự
1+2+3+4+5+6+7+8+9
tinh bang cach thuan tien nhat
tinh bang cach thuan tien;
1234+1357+3456+9753
1+2+3+...+99+100
2+4+6+...+98+100
4+9+8+6+2+1+3+7=
tinh nhanh va thuan tien
ai nhanh va day du nhat thi minh tk cho
Điền > < =
(87 + 3) : 3 ........ 30
25 + (42 – 11) ........ 55
100 ........ 888 : (4 + 4)
50 ........ (50 +50) : 5
Tinh bang cach thuan tien :
1+5+9+13+...+29
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50.
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 +9 +10 +11+ 12 +13 + 14+ 15=?
hay tinh nhanh
Find the values of these espressions :
25 - (20 - 10)
80 - (30 + 25
125 + (13 + 7)
416 - (25 - 21)
(65 + 15) x 2
46 : (6 : 3)
(74 - 14) : 2
81 : (3 x 3)
123 x (42 - 40)
(100 + 11) x 9
72 : (2 x 4)
64 : (8 : 4)
tinh nhanh
1+2+3+4+5+6+7+8+9+11+12+13+14+15+16+17+18+19