Common core addition
Common core addition - Line addition (or open number line)
This is a method of adding two numbers using small progressive steps along a line.
Example 1
`42+27`
To see how this is broken down
Step by step
Example 1
`42+27`
Answer: `=69`
Answer: `=69`
Example 2
`419+275`
To see how this is broken down
Step by step
Example 2
`419+275`
Answer: `=964`
Example 3
`256+137`
To see how this is broken down
Step by step
Example 3
`256+137`
Answer: `256+137=393`
Answer: `=393`
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)