Horizontally
Vertical
100

Add

542+213=

755

100

Add

    344

+ 213

----------

557

200

Add the following 

Th H T O

7    3  2  4

2   6    0  3

‐-----------------

9927

200

T.th   th  H   T  O

3       6     8   2  4

4       1    0     5  2

---------------------------

77876

300

2431 + 6358

8789

300

3685 + 123

3808

400

34603 + 41205

75808

400

Putting the objects together is called 

Addition 

500

     4     5

+  6      0

--------------'

  1   0   5

If 45 and 60 are added. What is the answer is called 

Sum / total