what number is shown?

Explanation:

Step1: Identify value of large blocks

Assume large block is 100, there are 7 large blocks, value is $7\times100 = 700$.

Step2: Identify value of long - rods

Assume long - rod is 10, there are 3 long - rods, value is $3\times10=30$.

Step3: Identify value of small cubes

Assume small cube is 1, there are 2 small cubes, value is $2\times1 = 2$.

Step4: Calculate total value

Add up values: $700 + 30+2=732$.

Answer:

732