Addition Algorithm for Whole Numbers

1
Addition Algorithm for Whole Numbers

• 235
• 492

2
Addition Algorithm for Whole Numbers

• 235
• 492
• 7

Place Value Start with smallest pieces
(ones) Basic Fact 5 ones 2 ones 7 ones Basic
Fact 5 2 7 Rename not needed
3
Addition Algorithm for Whole Numbers

• 1
• 235
• 492
• 27

Place Value move to the tens Basic Fact 3 tens
9 tens 12 tens Basic Fact 3 9 12
Rename 12 tens as 1 hundred 2 tens
4
Addition Algorithm for Whole Numbers

• 1
• 235
• 492
• 727

Place Value move to the hundreds Basic Fact 1
hundred 2 hundreds 4 hundreds 7
hundreds Basic Fact 1 2 4 7 Rename not
needed
5
Addition Algorithm for Whole Numbers

• 235
• 492

200 30 5 400 90 2
6
Addition Algorithm for Whole Numbers

• 235
• 492
• 7

200 30 5 400 90 2 7
7
Addition Algorithm for Whole Numbers

• 1
• 235
• 492
• 27

200 30 5 400 90 2 120 7
8
Addition Algorithm for Whole Numbers

• 1
• 235
• 492
• 27

100 200 30 5 400 90 2 20 7
9
Addition Algorithm for Whole Numbers

• 1
• 235
• 492
• 727

100 200 30 5 400 90 2 700 20 7
10
Notice the cycle

• For all addition algorithms there is a cycle of
• Place Value (identify like sized pieces)
• Basic Facts
• Rename (if necessary)