Addition With Regrouping

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Addition with carrying is called addition with regrouping.
Steps involved in addition with carry
• First add the digits in the unit place.
• If the above addition is greater than or equal to 10 then write the unit
   place (ones place) digit below and tens place digit carry forward.
• Place the carry forward digit on the top of tens digit.
• Finally add all the three numbers.
• The answer may be two digit or three digit.

Example 1 : Add 58 + 23
Here 58 is a two digit number so write the numbers 5 and 8 according to their place values. So 5 is below tens (T) place and 8 is below ones place (O). The second number is 23 , which is also a two digit number so write it according to its place values.

   T O
(1)
5 8
+ 2 3
______
8 1

Example 2: 78 + 22
Write 78 and 22 according to their place value. Then add unit digit
(8 + 2= 10) as this answer is two digit so from that write 0 below the line in unit place column. Write Tens digit (1) below 'T' and above 7. Add all the three numbers ( 1 + 7 + 2 = 10). So the answer is 100.
   T O
(1)
7 8
+ 2 2
______
1 0 0

Example 3: 98 + 42

   T O
(1)
9 8
+ 4 2
______
1 4 0

For practice,download the following and send me the feedback
   T O
8 4
+ 7 6
______

   T O
8 8
+ 2 8
______

   T O
2 4
+ 5 9
______

   T O
6 2
+ 6 9
______

   T O
8 4
+ 2 6
______

   T O
1 7
+ 2 9
______

   T O
8 4
+ 1 8
______

   T O
3 8
+ 4 9
______

   T O
1 5
+ 4 7
______

   T O
5 2
+ 9 9
______


Addition with regrouping

1st Grade Math

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