3.3 Estimate or Exact Answer

On Saturday Zachary's sister worked in the garden and planted 24 flowers. On Sunday she planted 15 flowers. How many more flowers did she plant on Saturday than Sunday? *no label

On Saturday Zachary's sister worked in the garden and planted 24 flowers. On Sunday she planted 15 flowers. How many more flowers did she plant on Saturday than Sunday? Should you find an exact or estimated answer?

• Exact

• Estimated

The Littleton Public Library gets 37 new magazines and 45 new books every week. In 3 weeks about how many more books than magazines will they receive? *no label

The Littleton Public Library gets 37 new magazines and 45 new books every week. In 3 weeks about how many more books than magazines will they receive? Should you find an exact or estimated answer?

• exact

• estimated

There are enough seats for 55 students on the bus. Can all 35 boys and 28 girls ride the bus?

• yes, there are 55 seats and 30 + 20 = 50 so there are enough seats

• yes, 35 + 28 = 53 so there will be two empty seats

• no, 35 + 28 = 63 so 3 more seats will be needed

• no, 35 + 28 = 63 so 8 more seats will be needed

Raul cut 3 pieces of fabric. One piece was 12 inches long and another piece was 41 inches long. What length does Raul need to cut the third piece to have enough fabric for a project that needs 67 inches of fabric? *no label

Raul cut 3 pieces of fabric. One piece was 12 inches long and another piece was 41 inches long. What length does Raul need to cut the third piece to have enough fabric for a project that needs 67 inches of fabric? Should you find the exact answer or an estimated answer?

• exact

• estimated

About how many more minutes did Katie practice her guitar on Monday than on Friday? *no label

About how many more minutes did Katie practice her guitar on Monday than on Friday? Should you find an exact answer or an estimated answer?

• exact

• estimated

Match the following

• 3,502

• standard form

• result of subtraction

• word form

• 3,000+500+2

• expanded form

• result of addition

• sum

• three thousand, five hundred two

• difference