Whole Number Estimation
Presentation
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
Kyla Baughman
Used 99+ times
FREE Resource
3 Slides • 7 Questions
1
Estimate - a rough judgment of a number.
When do I need to estimate?
To make sure my answer is reasonable.
When I only need an approximate amount.
To solve for an amount quickly.
2
Multiple Select
Which of the following would be a key word for needing an estimate?
Approximately
About
Closest to
Estimate
3
How do we estimate?
Use your rounding skills BEFORE you solve!
Four or less, let it rest. Five or more, raise the score!
A good rule of thumb is to round to the largest place value of the smallest number.
For example: 5,480 + 367 ----> round to the hundreds place!
4
Multiple Choice
What place would you round these numbers to before subtracting?
789,648 - 54,902
Hundred thousands
Ten thousands
Thousands
Hundreds
5
Let's look at this word problem.
Two local elementary schools are raising money for holiday toys for families in Augusta County. Clymore raised $11,037. Riverheads raised $9,735. About how much more did Clymore raise than Riverheads?
What key word do you see? How should we solve?
6
Multiple Choice
Two local elementary schools are raising money for holiday toys for families in Augusta County. Clymore raised $11,037. Riverheads raised $9,735. About how much more did Clymore raise than Riverheads?
$1,302
$1,000
$21,000
$20,772
7
Poll
1,653 + 732
Jordan says that the best way to
estimate this sum is to round to the
nearest hundred. Joy says the best way to
estimate is to round to the nearest
thousand. Who is correct? Be ready to explain.
Jordan
Joy
8
Multiple Choice
Sam needs $325 for the new bike he wants
to purchase. So far, he has saved $73.
About how much more money does Sam
need to save?
$398
$400
$252
$260
9
Multiple Choice
Jack ran 826 miles last year.
Jason ran 1,052 miles last year.
About how many more miles
would Jack have needed to run to
match Jason’s distance?
226 miles
300 miles
1,878
1,900
10
Multiple Choice
Jamie earned $462 mowing lawns
over the summer. Then, she made
$66 by selling lemonade. About how
much money did she make all
together over the summer?
$390
$396
$530
$528
Estimate - a rough judgment of a number.
When do I need to estimate?
To make sure my answer is reasonable.
When I only need an approximate amount.
To solve for an amount quickly.
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