Number line addition II

This task is about showing how to solve addition equations on a number line.

For the questions below show how to solve the equations on the number line. Read the example below before you start.

Example: For the equation: 46 + = 70,
Sarah used tidy numbers to show the answer on a number line. She knew that 46 + 4 = 50, and then 50 + 20 = 70.

So she showed this on the number line and        wrote the answer in the box:
 
 
a)
 
Show how to solve the equation: 23 +  = 80 on the number line below
 
 
 
 

 
b) Show how to solve the equation: 38 +  = 92 on the number line below.
 
 
 
 

 
c) Show how to solve the equation: 127 +  = 253 on the number line below.