Question

a110b
(11) 6 - 3 =
(12) 4 - 3 =
(13) 10 - 3 =
(14) 5 - 3 =
(15) 12 - 3 =
(16) 8 - 3 =
(17) 7 - 3 =
(18) 14 - 3 =
(19) 9 - 3 =
(20) 13 - 3 =

Explanation:

(11)

Step1: Subtract 3 from 6

$6 - 3 = 3$

Step1: Subtract 3 from 4

$4 - 3 = 1$

Step1: Subtract 3 from 10

$10 - 3 = 7$

Answer:

3

(12)