Haley is making floral centerpieces for a wedding each centerpiece has 17 flowers she has 430 flowers for the project she estimates that she can make between 20 and 30 complete centerpieces is her estimate reasonable use your knowledge of place value and division to explain the reasonableness of her answer

1 answer

To determine if Haley's estimate for the number of floral centerpieces she can make is reasonable, we can perform some simple calculations using division.

  1. Total number of flowers: 430
  2. Number of flowers per centerpiece: 17

To find out how many complete centerpieces she can make, we divide the total number of flowers by the number of flowers required for each centerpiece.

\[ \text{Number of centerpieces} = \frac{\text{Total flowers}}{\text{Flowers per centerpiece}} = \frac{430}{17} \]

Now, we perform the division:

First, we estimate how many times 17 fits into 430. We can do a rough approximation to simplify the calculation:

Since \( 17 \times 20 = 340 \) and \( 17 \times 30 = 510 \), we see that:

  • \( 340 < 430 < 510 \)

This indicates that it’s somewhere between 20 and 30 centerpieces. For a more accurate calculation:

\[ 430 \div 17 \approx 25.29 \]

Since Haley can only make a whole number of centerpieces, we round down to 25.

Now, checking reasonable rounding, we find:

  • 20 centerpieces would require \( 20 \times 17 = 340 \) flowers.
  • 30 centerpieces would require \( 30 \times 17 = 510 \) flowers (which exceeds the available 430 flowers).

Thus, she can make a maximum of 25 complete centerpieces with the flowers available.

Conclusion: Since 25 is within the estimated range of 20 to 30, Haley's estimate is reasonable.