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

 

Example:  Sarah had to solve this problem: 96 – =  64. She knew that 96 – 30 = 66, and that 66 – 2 = 64.  So she showed this on the number line and then wrote the answer in the box:            96 – =  64

Use the number lines below to show how to solve the equations.

a)   128 +  = 519     

b)   345 +  = 603     

c)   530 –  = 327     

d)   906 –  = 625