Estimation
This would be a good estimate answer for 43 + 53.
What is 90?
This number ________ is 1,029 rounded to the nearest thousand.
What is 1,000?
Solve with traditional addition
2,435 + 654
3,089
It's in a Window frame.
What are Line Segments
Without solving. Estimate.
234 + 534
234--> 200
534-->500
200 + 500= 700
This is the value of the 2 in the number 4,238.
What is 200?
5,768 - 4,967
801
Yellow strips down long roads
What is a line
Without solving. Will the answer be lower or higher than 800?
587 + 265
Higher because
587--> 600
265 --> 300
Estimate is 900
This is the place of 6 in the number 1,768,932
What is the Ten-thousands
3,782 + 1,224
5,006
It has one end point and one arrow.
What is a ray?
Estimate:
876-456
876--> 900
456--> 500
Answer is about 400.
This number ________ is 872,346 rounded to the nearest hundred- thousand.
What is 900,000.
345,279 - 3,459
341,820
This is forever going with arrows on either side.
Line
Without solving. Estimate.
The 4th grade teachers had a cupcake fundraiser. They need to make 100 dollars. On Monday they made 43 dollars. On Tuesday they made 39 dollars. On Wednesday, they made 33 dollars. Did they make their goal?
Yes because 43 is rounded to 40.
39 is rounded to 40. 33 is rounded to 30. So....
40 + 40 + 30= 110
This number ________ is 1,245,042 rounded to the nearest ten- thousand.
What is 1,255,000
87,462 + 42,437
129,899
a sharpened pencil could look like this __________
An unsharpened pencil could look like a ___
A ray and a line segment