What’s a REASONABLE estimate? (11 A) Amber was shooting baskets at gym. On her first try she shot 23 baskets. On her second try she shot 19 baskets. About how many free thrown baskets did Amber shoot? A little more than 40 A little less than 40 A little more than 30 A little less than 30 Let’s find the actual number and then compare it to the rounded number!

Write the numbers below in expanded form. (200 + 30 +6) 376 _________________________________________ 26tens and 13 ones _______________________________ Four thousand, twelve___________________________ 300 + 70 + 6 273 4000 + 10 + 2

Write the value of the underlined digit? 6,876 _______________ 6,876,843 _________________ 800 6,000,000

Round the numbers below to the nearest thousand. 4,321 ______________ 76,976 _____________ 5,190 _____________ 4,000 77,000 5,000

What’s a REASONABLE estimate? (11) Alex rode his bike 12.8 miles. Then he had a flat tire and had to walk 6.1 miles. About how many miles did Alex travel that day? A little more than 18 A little less than 18 A little more than 19 A little less than 19 Let’s find the actual number and then compare it to the rounded number!

Write the numbers below in standard form. ( 2,378) 5000 + 60 + 8 ________________________ 16 hundreds, 8 tens and 23 ones ____________________ Three hundred sixteen thousand, five hundred two _________ 5,068 1,703 316,502

Write the name for each group of three numbers. (millions, thousands, units/ones, billions) 987, 822, 564, 342 _______ ________ _______ ________ billions thousands millions ones/units

20,000 Round the numbers below to the nearest ten thousand. 24,821 ______________ 29,076 _____________ 15,190 _____________ 20,000 30,000 20,000

Mr. Johnson drove 489 miles on Monday. He drove 100 fewer miles on Tuesday. How many miles did he drive on Tuesday? 589 499 389 479

What’s a REASONABLE estimate? (11) Amanda went to the movies and spent $8.88. She gave the clerk $20.00. ABOUT how much change did Amanda receive back? A little more than $10 A little less than $10 A little more than $11 A little less than $11 Let’s find the actual number and then compare it to the rounded number!

325 415 515 525 Mrs. Baxter made cookies for the school fair. On Monday she made 425 cookies and on Tuesday, she made 100 more cookies. How many cookies were sold on Tuesday? 325 415 515 525

Which of the following is another name for 3410? 30 + 40 + 10 300 + 400 + 10 3000 + 400 + 10 3000 + 40 + 100

Which is another name for 5000 + 90 + 3? 5093 5903 5090 50,903

What’s a REASONABLE estimate? (11) Louisa say lots of people at the Big E fair in Massachusetts over the weekend. On Saturday she saw 2,821 people there. On Sunday there were 8,199 people there. About how many more people did Louisa see on Sunday? A little more than 5,000 A little less than 5,000 A little more than 6,000 A little less than 6,000 Let’s find the actual number and then compare it to the rounded number!

Which means the same as 48 tens? 4800 408 480 48 Hint: Remember how many zeros are in a number in the tens place!

Which means the same as 3147? 2 thousands, 14 hundreds, 7 ones 3 thousands, 11 hundreds, 47 tens 3 thousands, 14 hundreds, 7 tens 2 thousands, 11 hundreds, 47 ones Hint: Solve each problem with an addition sentence!

In which number does the 3 have the greatest value? 3265 2356 2653 6532 Hint: circle the 3 in each number to compare!

What’s a REASONABLE estimate? (11) Caelie and her family purchased two new laptops for school this year. The PC they bought was $987 and the MAC they bought was $1,365. ABOUT how much did the two computers cost the family? A little more than 2,000 A little less than 2,000 A little more than 3,000 A little less than 3,000 Let’s find the actual number and then compare it to the rounded number!

What is the value of the 7 in 2573? 7 70 7000 700 Hint: circle the 7 in the number and look at its place!

The value of 4329 would change by how much if the 3 were replaced by 6? 3 30 300 3000 Hint: write the new number on top of the old number to compare!

Peter ate mini carrots for 8 minutes. If he ate between 7 and 10 carrots per minute, how many carrots could Peter have eaten? 50 65 80 45 Hint: Use the Ballpark strategy!

Shelly needs to subtract 27,241 from 62,739. Which of the following would be the BEST estimate for Shelly to use to estimate the difference? 60,000 – 30,000 60,000 – 20,000 70,000 - 20,000 70,000 – 30,000 HINT: round both numbers to the nearest ten thousand first!

Mark needs to multiply 281 X 619. Which of the following would be BEST for Mark to use to ESTIMATE this product? 200 X 600 300 X 700 300 X 600 200 X 700 HINT: round both numbers first!

Maria added 900 + 900. Will Maria’s ESTIMATE To estimate the sum of 876 + 897, Maria added 900 + 900. Will Maria’s ESTIMATE be more or less than the ACTUAL? More because both number rounded up More because both number rounded down Less because both number rounded up Less because both number rounded down Hint: solve the actual problem and the estimate, then compare!

A vase was on Sale for $18.12. Mrs. Norcel bought it for Ms. Strever. She paid with a $20 bill. ABOUT how much change did she receive back? A little less than $1 A little more than $1 A little less than $2 A little more than $2 HINT: do the subtraction first!

The value of 4129 would change by how much if the 1 were replaced by 6? 5 50 500 5000 Hint: write the new number on top of the old number to compare!

Is it an over estimate or underestimate? (10B) Last Winter Peter and his father went to a bunch of Red Sox games. At the first game there were 28,223 people in attendance. At the second game there were 29,102 people in attendance. Peter estimated that 30,000 + 30,000 people were at the two games. Will Peter’s actual be more or less than his estiimate? More because he rounded both numbers up More because he rounded both numbers down Less because he rounded both numbers up Less because he rounded both numbers down Let’s compare the actual and the estimate to help us out!

What is the value of the 3 in 3245? 3 30 3000 300 Hint: circle the 7 in the number and look at its place!

The value of 4863would change by how much if the 4 were replaced by 9? 5 50 500 5000 Hint: write the new number on top of the old number to compare!

What is the same as 350? 35 hundreds 35 ones 3tens and 5 ones 35tens