On Monday, Lenny did 6 pull-ups. On Wednesday, Lenny did 12
pull-ups. On Thursday, Lenny did 8 pull-ups. On Tuesday, Lenny did 10 pull-ups, Make a table to organize this information.

An author wrote four books about hiking. Hike for Life
sold 350,456 copies. Tricky Trails sold 345, 110 copies.
Miles a Day sold 354, 101 copies. Safe Hiking sold 305,456 copies. Make a table to organize this information.

To round a number: Find the place value to which you want to round.

1. Look at the digit to its right.

2. If the digit is less than 5, the digit in the rounding place
stays the same.

3. If the digit is 5 or more, the digit in the rounding place increases by 1.

Round each number to the nearest thousand.

1. 64,385

2. 37,879

3. 1,437,534

Round each number to the place value of the blue digit.

1. 264,385

2. 3,637,879

3. 1,437,534

4. 12,167,392

5. 53,129

Working on a hard or tricky word problem.

A. Read the problem over several times until you understand it.

B. Write down parts that you understand until you can put it all
together.

1. On the place value chart, my thousands period is seventy-four.
My ones period is 500 + 20 + 3. My millions digit is three times
my ones digit. What number am I? Round me to the nearest hundred thousand.

2. Describe all of the numbers that when rounded to the nearest
thousand are 312,000.

Solve each problem. Decide if you need an exact answer or an
estimate. Clue: Look for the word "about" for estimates.

1. Anna bought a baseball hat for $9.95. She bought a baseball bat for $4.40. How much change will she get back from $20?

2. The school cafeteria served 115 cartons of regular milk, 78 cartons of chocolate milk, and 35 cartons of orange juice. About
how many beverages were served?

3. A photo gallery has a total of 6,232 photographs. It has
5,760 photographs in photo albums. How many photographs are
not in photo albums?

4. At the store, Mrs. Smith will buy a tool for $4.65 and
cleanser for $5.10. About how much money will she need (not including tax?)

Solve each problem. Decide if you need an exact answer or an estimate. Clue: You may not always see the word "about" in the sentence. Sometimes you need to make an INFERENCE about what is needed.

1. Domingo wants to buy a CD for $12.98, a poster for $3.98,
and a book for $4.95. He has $20.00. Does he have enough
money for all three items?

2. Ellie will win a prize if she sells 400 boxes of cookies. If she sells 113 in January, 107 in February, and 68 in March, how many more does she have to sell?

3. Fernando bought groceries that cost $17. He paid with a
$50 dollar bill. What is a good estimate of the change that
Fernando should receive?

4. At a college, there are dorm rooms for 29,470 students.
If there are 31,652 students at the college, how many students
do not live in the dorm?