Find Its Place Value
Round Those Numbers
Educated Estimates
Add It Up/Subtract It Down
Convert Geometry
100
What is the value of the digit 5 in 4,653?
50
100
521--->500
What is 521 rounded to the nearest 100?
100
Estimate 546+21=
550+20=570
100
134+222=
356
100
Convert 4 yards to feet
12 feet
200
What is the value of the digit 8 in 8,241?
8,000
200
677--->680
What is 677 rounded to the nearest tens?
200
Estimate 322-189=
300-200=100
200
677+345=
1,022
200
Convert 5 feet to inches
60 inches
300
What place value is the 2 in 324 in?
The tens place
300
6,549--->7,000
What is 6,549 rounded to the nearest thousands?
300
1,631+342= What type of estimation strategy would you use and what is your estimation?
Front-end, Close-to or Rounding 2,000+300+2,300
300
987-235=
752
300
If a rectangle has 1 side that is 10 feet and another side that is 5 feet, what is the perimeter of the rectangle?
30 feet
400
6,890____6,980
6,890 < 6,980
400
20,580--->21,000
What is 20,580 rounded to the nearest thousand?
400
How can you use your estimate to see if you actual answer makes sense?
If the estimate is close to my actual answer, then my actual answer makes sense.
400
1,082-534=
548
400
Convert 12 yards into feet.
36 feet
500
56,118____9,118
56,118 > 9,118
500
481,242--->500,000
What is 481,242 rounded to the nearest hundred thousand?
500
Sandy made 61 cookies on Wednesday, 28 on Thursday, and 157 on Friday. She ate 8 cookies. She needs 220 cookies for her family reunion. Without solving, do you think she made enough?
Yes 60+30+150=240
500
9,001-438=
8,563
500
If a square has one side that measures 6 inches, what is it's perimeter and area?
Perimeter: 24 inches Area: 36 inches squared
M
e
n
u