Question

a200a kumon a 200
subtraction 12 (summary of subtraction)
name
100% ~90% ~80% ~70% 69%~
date / /
◆ subtract.
(1) 10 - 3 =
(2) 11 - 6 =
(3) 12 - 7 =
(4) 15 - 4 =
(5) 16 - 8 =
(6) 13 - 7 =
(7) 17 - 9 =
(8) 14 - 5 =
(9) 18 - 6 =
(10) 19 - 2 =
(11) 20 - 3 =

Explanation:

(1)

Step1: Perform subtraction

$10 - 3 = 7$

Step1: Perform subtraction

$11 - 6 = 5$

Step1: Perform subtraction

$12 - 7 = 5$

Answer:

7

(2)