Unit 2-Rounding, Estimating, Addition and Subtraction

Mountain City has a population of 45,728. What is 45,728 rounded to the nearest ten?

• 50,000

• 46,000

• 45,700

• 45,730

Which number is 247,039 rounded to the nearest thousand?

• 200,000

• 250,000

• 247,000

• 7,000

An elevator can hold up to 1,000 pounds.  Can all 5 people ride the elevator at once?  Show your work.

No.  Total of 1,022 lbs

• Yes. Total of 1,000 lbs.

• No. Total of 1,022 lbs.

• No, total of 1,032 lbs

Select one number that round sto 500,000. 

   589,302

512,999

489,521

425,678

450,724

564,301

• 589,302

• 562,999

• 489,521

• 449,999

The Pumpkin Patch harvested 8,962 orange pumpkins and 2,371 green pumpkins.  How many more orange pumpkins than green pumpkins were harvested?

• 6,591 

• 6,491

• 5,591

• 5,492

ABOUT 300,000 people visited Disney World last month. Which of the following could be the exact number of Disney visitors last month?

• 251,112

• 249,999

• 350,001

• 399,561

Find the sum.

1,369,333  +  2,899,459

• 3,268,792

• 4,268,792

• 4,158,682

• 4,415,792

In 2019, there were 849,080 people that visited the Statue of Liberty.  In 2020, only 51,492 people visited the Statue of Liberty.  How many more people visited the Statue of Liberty in 2019 than 2020?

• 718,562

• 817,598

•  797,588

• 898,582

Four boxes of coconuts need to be shipped to Hawaii.  

Zeke rounded the weight of each box to the nearest hundred and said the combined weight is about 600 pounds.  Is he correct?  Why or why not?

• Correct

• Incorrect.  900 is correct estimate.

• Incorrect.  1,000 is correct estimate.

• Incorrect.  1,100 is correct estimate.

The steps a student used to subtract 74 from 326 are shown.

Step 1. He subtracted 4 ones from 6 ones to get 2 ones.

Step 2. He subtracted 7 tens from 12 tens to get 5 tens.

Step 3. He subtracted 0 hundreds from 3 hundreds to get 3 hundreds.

Where did the student made his FIRST mistake?

• Step 1

• Step 2

• Step 3

• Step 4