1.3 Qoyyabootaafi Amaloota Lakkoofsota Raashinaalii
1. Kaayyoo Barumsaa
- Qoyyaboota bu'uuraa lakkoofsota raashinaalii irratti ni raawwatu.
- Amaloota herregaa (Commutative, Associative, Distributive) adda ni baafatu.
- Inveersii (Inverse) fi Ayidentitii (Identity) ni hubatu.
2. Yaadannoo (Mathematical Laws)
Lakkoofsota raashinaalii irratti:
- Amala jijjiirraa Iddoo: a + b = b + a
- Amala Jijjiirraa Hammattuu: (a + b) + c = a + (b + c)
- Amala raabsamaa: a(b + c) = ab + ac
- Masaanuu ykn Fuggisoo : a + (-a) = 0 ykn
ab×ba= 1
3. Fakkeenyota (Examples)
1. Ida'uu:
14
+
24
=
34
2. Baay'isuu:
23
×
57
=
1021
3. Hiruu:
12
÷
34
=
12
×
43
=
23
4. Inverse: Maltiplikaatiiv Inveersiin (Reciprocal)
25
tii
52
dha.
5. Distributive: 2(3 + 4) = 2(3) + 2(4) = 6 + 8 = 14.
4. Gaaffilee Shaakalaa (15)
1.
35
+ 15
= ? (4/5)2.
78
- 38
= ? (4/8 = 1/2)3.
12
× 34
= ? (3/8)4.
23
÷ 13
= ? (2)5. Additiiv Inveersiin -4 tii meeqa? (4)
6. Reciprocal-iin
56
tii meeqa? (6/5)7. 0 +
34
= ? (3/4)8. 1 ×
59
= ? (5/9)9. a + b = b + a amala maaliiti? (Commutative)
10.
25
- 0 = ? (2/5)11.
47
× 0 = ? (0)12.
52
- 12
= ? (2)13. Fuggisoon 7 tii meeqa? (1/7)
14. 3(x + y) = 3x + 3y amala maaliiti? (Amala Raabsamaa)
15. -3/4 + 3/4 = ? (0)