Addition of One to Two- digit Numbers without Regrouping | Unifinity Blockchain Institute
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Addition of One to Two- digit Numbers without Regrouping

Learn to add one to two - digit numbers without regrouping.

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Mathematics First Grade



What you will learn

  • Learn to add one to two- digit numbers without regrouping
  • Learn to add ones to a number without regrouping using any method.
  • Learn to add tens to a number without regrouping using any method.
  • Learn to add two numbers without regrouping using any method.

Course Content

1 sections • 2 lectures • 00h 10m total length
Addition of One to Two-digit Numbers without Regrouping

In this module we will discuss one to two -digit numbers addition without regrouping. 

Addition without regrouping is when the digits add up to a number that is 9 or less. The answer can simply written below each place column. 

In adding numbers with digits less than ten, add from the right going to the left. Start from the ones digit, and then the tens digit.

Example:

Addition of two addends:

          4 7 step 1: 7 ones + 2 ones = 9 ones

   +     4 2 step 2: 4 tens + 4 tens = 8 tens or 80

          8 9 step 3: 8 tens and 9 ones + 80 + 9

 

Addition of three addends:

       53

       12

     + 21

        86

Start from the ones digit, and then the tens digit.

preview 10.5min
Addition of One to Two- digit Numbers without Regrouping

In this module we will discuss one to two -digit numbers addition without regrouping. 

Addition without regrouping is when the digits add up to a number that is 9 or less. The answer can simply written below each place column. 

In adding numbers with digits less than ten, add from the right going to the left. Start from the ones digit, and then the tens digit.

Example:

Addition of two addends:

          4 7 step 1: 7 ones + 2 ones = 9 ones

   +     4 2 step 2: 4 tens + 4 tens = 8 tens or 80

          8 9 step 3: 8 tens and 9 ones + 80 + 9

 

Addition of three addends:

       53

       12

     + 21

        86

Start from the ones digit, and then the tens digit.

mb

Requirements

  • Paper and pen, prior knowledge in adding, laptop/computer.

Description

In this module we will discuss one to two -digit numbers addition without regrouping. 

Addition without regrouping is when the digits add up to a number that is 9 or less. The answer can simply written below each place column. 

In adding numbers with digits less than ten, add from the right going to the left. Start from the ones digit, and then the tens digit.

Example:

Addition of two addends:

          4 7 step 1: 7 ones + 2 ones = 9 ones

   +     4 2 step 2: 4 tens + 4 tens = 8 tens or 80

          8 9 step 3: 8 tens and 9 ones + 80 + 9

 

Addition of three addends:

       53

       12

     + 21

        86

Start from the ones digit, and then the tens digit.

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Last Updated 12th May 2022
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About the Instructor

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About the Instructor

Graduated with the degree of Bachelor of Secondary Education major in Social Science.

Santa Cruz Institute (Marinduque) Inc.

Santa Cruz, Marinduque (Philippines)