Solve 46 - 27 Using Base-10 Blocks: Visual Subtraction Strategy

To solve this problem, let's follow a step-by-step approach using subtraction with regrouping:

• Step 1: Set up the subtraction problem as $46 - 27$.
• Step 2: Compare the one's place: 6 (in 46) and 7 (in 27). Since 6 is less than 7, we need to regroup.
• Step 3: Regroup one ten from the 4 tens in 46. This will leave us with 3 tens and increase the units to 16.
• Step 4: Now perform the subtraction for the one's place: $16 - 7 = 9$.
• Step 5: Subtract the tens: $3 - 2 = 1$.

Thus, the remaining number of blocks after removing 27 from 46 is $19$.