Lesson Steps:

U use finger to use your 10 finger and any sibling and u use their 10 finger to count in total

Answer:

20

Grade: 13
Level: Primary
Subject: Math
Topic: Addition

Lesson Steps:

To add two numbers, first place them according to place values and then add from ones to ones and tens to tens value.
10
+10
-----
20
-----

Answer:

20

Grade: 13
Level: Primary
Subject: Math
Topic: Addition

Lesson Steps:

see the image

Answer:

20

Grade: 13
Level: Primary
Subject: Math
Topic: Addition