[r]
(1)(2)(3)(4)(5)3
(6)5 – = 3 5 – = 4
5 – = 2 5 – = 1
(7)5 – = 4 5 – = 3 5 – = 2
(8)5 – = 4 5 – = 3 5 – = 2
(9)5 – = 4 5 – = 3 5 – = 2
(10)5 – = 4 5 – = 3 5 – = 2
(11)1 + = 5
4
5 1 3 5 2
4 + = 5
5 = 1–
5 – = 1 3 + = 5 +3 = 5
(12)Bài 1: Tính 2 – =
3 – = 4 – = 5 – =
4 – = 5 – = 3 – =
4 – = 5 – =
– =
(13)Bài 2: Tính 5 – = 5 – = 5 – = 5 – =
2 + = 3 + = 5 – = 5 – = 1 + 4=
4 + 1= 5 – = 5 – =
(14)Bài 3: Tính
5 3
- 51 4
2
-4 2
(15)(16)5 - 2 = 3
(17)