Remove Hundreds and Ones from 545: Place Value Exercise

If in total we have 545 blocks,

and we only remove the hundreds and ones, write down the resulting exercise:

To solve this problem, we'll be removing the hundreds and ones digits from the total 545 blocks and writing the resulting subtraction exercise.

• Step 1: Identify hundreds and ones contributions.
  Hundreds digit is 5, so hundred contribution = $5 \times 100 = 500$.
  Ones digit is 5, so one contribution = $5 \times 1 = 5$.
• Step 2: Sum the contributions from hundreds and ones.
  Total contribution to remove = $500 + 5 = 505$.
• Step 3: Subtract the total contribution from the original total.
  Subtraction exercise = $545 - 505$.
• Step 4: Calculate the result of the subtraction.
  Final result = $40$.

Therefore, the solution to the problem is $545 - 505 = 40$.