คู่มือผู้ใช้

Th-12
k 
 (%) 

 1: 2 % = 0.02 (
2
100
)
2 ! ( (%) w
 2: 150 × 20% = 30 (150 ×
20
100
)
150*20
!
(
(%)
w
 3: 660  880?
660/880
!
(
(%)
w
 4:  2,500  15%
2500+2500*
15
!
(
(%)
w
 5:  3,500  25%
3500-3500*
25
!
(
(%)
w
 6:  168, 98  734  20%
168+98+734
w
-
G
*20
!
(
(%)
w
 7:  300  500   800
 800  500 ?
(500+300)
/500
!
(
(%)
w
 8:  40  46 ?
(46-40)/40
! (
(%) w
002
30
75
2875
2625
1000
800
160
15