a) x × 5 = 35 – 5
x × 5 = 30
x = 30 : 5
x = 6
b) x : 4 = 12 – 8
x : 4 = 4
x = 4 × 4
x = 16
c) 4 × x = 6 × 2
4 × x = 12
x = 12 : 4
x = 3
d) x : 3 = 16 : 4
x : 3 = 4
x = 4 × 3
x = 12
a) x × 5 = 35 – 5
x × 5 = 30
x = 30 : 5
x = 6
b) x : 4 = 12 – 8
x : 4 = 4
x = 4 × 4
x = 16
c) 4 × x = 6 × 2
4 × x = 12
x = 12 : 4
x = 3
d) x : 3 = 16 : 4
x : 3 = 4
x = 4 × 3
x = 12
Tìm x :
a) x + 3 = 6
x × 3 = 6
b) 4 + x = 12
4 × x = 12
Tìm x (theo mẫu)
Mẫu:
x + 3 = 9
x = 9 - 3
x = 6
a) x + 8
b) x + 5 = 17
c) 2 + x = 12
d) 2 + x = 12
e) x + 4 = 15
Tìm x, biết:
a) x : 4 = 8
b) 4 × x = 12 + 8
c) 30 : x = 14 + 16
1 x 2 = ?
1 x 2 x 3 = ?
1 x 2 x 3 x 4 = ?
1 x 2 x 3 x 4 x 5 = ?
1 x 2 x 3 x 4 x 5 x 6 = ?
1 x 2 x 3 x 4 x 5 x 6 x 7 = ?
1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 = ?
1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 = ?
1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 = ?
Bài 1 : Tính
8 x 8 =
6 x 4 =
4 x 4
Bài 2 : < , > , =
4 x 6 7 x 5
5 x 7 8 x 9
3 x 5 6 x 9
Tìm x:
x×3=12
4×x=8
x×4=28
Tính nhẩm:
3 x 4 = ............... 3 x 5 = ...............
4 x 7 = ............... 5 x 4 = ...............
15 : 3 = .............. 24 : 4 = ..............
5 x 6 = ............... 5 x 9 = ...............
25 : 5 = ..............
tìm x,y
a\(\frac{x}{2}=\frac{y}{-5}\)và x-y=35
b2.x=y.4 và x+4=30
Tìm x :
a) x − 4 = 2
x : 4 = 2
b) x − 5 = 4
x : 5 = 4
c) x − 3 = 3
x : 3 = 3