tolong jawab ya:-) 1-5

1. Kel.Pers.Pnjg = 2(p+l)
P = 12 1/4 l = 8 3/4
2 ( 12 1/4 + 8 3/4 )
2 (20 4/4) ==> 2(21) ==> 42

2. 6 1/3 : 3
6:3 1/3 : 3/1
2 1/3 x 1/3
2 1/9

3. Hitung 1 per 1, dalam kurung
( 1 1/8 + 1 1/3 ) - ( 2 2/3 - 1 1/4 )
2 3+8 /24 - 1 8+3/12
2 11/24 - 1 11/12 = 1 11+22/24
1 33/24 atau 2 9/24 atau 2 3/8

4. ( 1 2/3 x 3 4/5 ) + (7 1/2 - 2 2/5)
( 3 2x4/15 ) + ( 5 5-4/10 )
3 8/15 + 5 1/10
= 8 16+3/30
8 19/30

Semoga membantu, maaf kalo salah