Các câu hỏi tương tự
tinh bang hai cach a)3/4 x 1/2 x 2
cach 1 : .....................................................
cach 2 : .....................................................
b) (3/4 + 1/2) x 5?7
cach 1 : .................................................................
cach 2 : .................................................................
tinh bang cach thuan tien nhat a.3/5+4/7+2/5+1/7+2/7 b.1/3+1/6+4/3+2/6+2/3
tinh bang hai cach : {3/4+1/2}*5/7
tinh bang cach thuan tien:
3/5+4/7+2/5+1/7+2/7=
Tinh bang cach thuan tien nhat
3/2 + 4/9 + 4/7 + 5/9
tinh bang cach thuan tien nhat 15/5*2/3*2/4=
tinh bang cach thuan tien nhat
1+2+3+4+5+6+7+8+9:9 =
Tinh bang hai cach
a)(2/5+5/6)*3/4
b)(7/12+5/64):2/3
tinh bang hai cach: (3/4+1/2)*5/7
5/7*13/21+2/7*13/21
tinh 7/5+4/3+7/5+4/3