25 x 34 + 34 x 25 + 34 x25 + 1
Ai tk mình thì mình tk lại!
25+4<x+25<25+7<x+35<4+35
x + 25 = 25 x 4
x + 25 = 25 x 4
Tính:
a) (12 + 8) x 4 = .........................
= .........................
12 + 8 x 4 = .........................
= .........................
b) 25 + 75 : 5 = .........................
= .........................
(25 + 75) : 5 = .........................
= .........................
Tìm x ? a. X x 5 = 25
b. x : 4 = 9
tính:
a/ 13 + 7 x 3 /7 x9= ?
b/ (6 + 4) x 5 + 25 / 5 - 8=?
c/ (3 + 7 ) x 5 + 25 / 5 - 8 =?
d/ 100 - 60 / 5 / 4 x 5 + 7 = ?
e/ 2285-467 / 3 x 7 -2212=?(từ trái sang phải)
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)
Tim y
1} (y - 25 ): 4 - 120 = 0
2} 120 - (x + 25) x 4 = 0