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 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 hai cach
3/5 x 7/21 + 7/21 x 2/5
Tinh bang hai cach
a)(2/5+5/6)*3/4
b)(7/12+5/64):2/3
tinh bang cach thuan tien nhat 15/5*2/3*2/4=
tinh bang cach thuan tien nhat
54nhan 2 nhan 9 nhan 5
Tinh bang cach thuan tien nhat
3/2 + 4/9 + 4/7 + 5/9
Tinh bang cach thuan tien nhat
4/7-2/5+17/7-3/5
giup minh voi minh dang can gap