A, 4 + x = 6
x = 6 - 4
x = 2
B, x - 4 = 7
x = 7 + 4
x = 11
X + 8 = 23
X = 23 - 8
X = 15
A, 4+x=6
x=6-4
x=2
B, x-4=7
x =7+4
x =11
X+8=23
X =23-8
X =15
a)4 + x = 6
x = 6 - 4
x = 2
B ) x - 4 = 7
x = 7 + 4
x = 11
X + 8 = 23
x = 23 - 8
x = 15
A, 4 + x = 6
x = 6 - 4
x = 2
B, x - 4 = 7
x = 7 + 4
x = 11
X + 8 = 23
X = 23 - 8
X = 15
A, 4+x=6
x=6-4
x=2
B, x-4=7
x =7+4
x =11
X+8=23
X =23-8
X =15
a)4 + x = 6
x = 6 - 4
x = 2
B ) x - 4 = 7
x = 7 + 4
x = 11
X + 8 = 23
x = 23 - 8
x = 15
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
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 = ?
4 x 6 = ?
4 x 7 = ?
4 x 8 = ?
4 x 9 = ?
Tìm x, biết:
a) x × 5 = 35 – 5
b) x : 4 = 12 – 8
c) 4 × x = 6 × 2
d) x : 3 = 16 : 4
1+1 = ?
2 + 2 = ?
3 + 3 =?
4 + 4 = ?
5 + 5 = ?
7 x 7 = ?
8 x 8 = ?
9 x 9 = ?
6 x 6 = ?
hãy tính nhanh:
A.1+2+3+4+5+6+7+8+9+10+11+12+13-14=?
B.30-29+28-27+26-25+24-23+22-21...+12-11+10-9+8-7+6-5+4-3+2-1=?
1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 =
1 x 2 x 3 + 4 + 5 - 6 - 7 x 8 = ?