Question

The following question has two parts. First, answer part A. Then, answer part B.

Part A
Hailey 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.

How many complete centerpieces can she make? Find the exact answer.


___ centerpieces

Answer 1

Her estimate is reasonable.She can make 25 completed centerpieces

Explanation:

Estimate 20 flowers per centerpiece. 430 flowers divided by 20 flowers per centerpiece.

430 /20 is approximately 21 centerpieces. Her estimate is reasonable.

430/20 Divide the top and bottom by 10

43/2 is 21*2 = 42 with 1 left over 21 1/2

We know we underestimated when we rounded 17 to 20. Se we are a little under with 21.5

Exact answer:

430÷17

17 goes into 43 2 times (17*2 = 34 43-34 = 9 left over)

17 goes into 90 5 time (17*5 = 85 90-85 = 5 left over)

She can make 25 completed center pieces