Page 90 - New Medley 1 Semester 2

7. 7 ones + 3 ones 8. 8 ones + 6 ones

= ones = ones

= ones + ones = ones + ones

= ten + ones = ten + ones

= =

9. 9 ones + 9 ones

= ones

= ones + ones

= ten + ones

=

Vertical Addition (With Carrying)

Let us add 15 and 8. T O

Step 1: Let us add ones digits. 1
1 5
5 + 8 = 13.
+ 8
We write 3 in ones column and carry over 1 to

tens place. 2 3

Step 2: Let us add the digits in tens column.

1 + 1 = 2.

We write 2 in tens column. Sum is 23.

A. Add the following.

1 7 1 9 2 7 2 8 3 8

+ 6 + 5 + 8 + 8 + 9

88