Rounding and Estimation
*** Daily Double ***
Bailey wrote the number 187,296. Alex wrote the number 592,479. What is the estimated sum of their numbers rounded to the nearest hundred thousand?
800,000
What is the sum of 46,359 + 1,273?
A) 47,522
B) 58,089
C) 47,632
D) 59,089
C) 47,632
A rectangle has a length of 7 meters and a width of 3 meters. What is the perimeter of the rectangle in meters?
A) 10 meters
B) 20 meters
C) 21 meters
D) 42 meters
B) 20 meters
James has a goal of reading 3,250 pages. He reads 384 pages the first month.
James writes the expression 3,300 + 400 to estimate how many more pages he needs to read. Is his estimate reasonable?
A) No, he should have rounded 3,250 to 3,200 instead
B) No, he should have subtracted 3,300 instead of adding
C) Yes, he correctly rounded each number to the nearest hundred
D) Yes, he correctly rounded each number to the nearest thousand
A) No, he should have rounded 3,250 to 3,200 instead
What is the sum?
7,218+32,849
40,849
The length of a rectangle is 8 inches. The width of the rectangle is 4 inches. What is the perimeter of the rectangle in inches?
24 inches
James has a goal of reading 3,250 pages. He reads 384 pages the first month.
How many more pages does James need to read to reach his goal?
He needs 2,866 more pages.
What is the difference? 682,741 – 95,126
587,615
Arnold has a rug shaped like a rectangle. His rug measures 5 feet long and 3 feet wide. Write an expression to find the perimeter.
P=5+3+5+3
OR
P= 2x5 + 2x3
*** Daily Double ***
A female white rhinoceros weighs 3,981 pounds. A male white rhinoceros weighs 5,032 pounds. How many more pounds does the male rhinoceros weigh than the female?
The male rhinoceros weighs 1,051 more pounds than the female.
How much greater is 579,611 than 185,105?
394,506
Arnold has a rug shaped like a rectangle. His rug measures 5 feet long and 3 feet wide.
P=l+w+l+w
How many feet is the perimeter of Arnold’s rug?
16 feet
Round each number to the nearest thousand and then add or subtract.
1. 88,521-9,263
2. 70,499+8,391
3. 63,901+15,899
1. 89,000-9,000= 80,000
2. 70,000+8,000= 78,000
3. 64,000+16,000=80,000*** Daily Double ***
The total attendance for a fair last year was 162,573 people. The total attendance this year was 159,865 people. How many fewer people attended the fair this year than last year?
2,708 fewer people attended this year than last year.
**** Daily Double****
The width of a field is 14 yards, and the length is 3 yards longer than the width. What is the perimeter of the field in yards?
A) 17 yards
B) 42 yards
C) 34 yards
D) 62 yards
D) 62 yards