TOÁN 6 HOC KY 1
Bai 1: Cho tap hop M gom co 2 phan tu a;b
a) Viet tap hop M bang 2 cach
b) Viet tat ca cac tap hop con cua M
Bai 2: Tinh
78-(4.5.5-3.2.2.2.2)
(-12)+(-15)+20
23.72+28.23+180
25+(-15)+10+(-15)
Bai 3: Tim x
6.x-5=11.22:11
(3.x-4.2)25.25=2.2.5.5.5.5.5.5
Bai 4 Chung minh
123456897.9876543132+17648727364.0 la hop so
31114111 la hop so
1112111 la hop so
Bai 5: Cho tia Mx, MN=4cm, MO=8cm
a) Chung minh N nam giua M, O
b) Tinh NO
c) So sanh MN ,MO
d) So sanh MN, NO
e) Tu cau a),b),d)thi ta suy ra duoc dieu gi