Sums & Differences
Find the sum.
15,683 + 67,989 = ?
What is 83,672.
Give a reasonable estimate for 5,628 + 1,493 =
Hint: Round each number to the nearest thousand.
What is 7,000.
On Saturday, 67,893 visited the aquarium. About how many people visited the aquarium?
What is 68,000
Find the difference.
56,006 - 12,483 =
43,523
Decompose the second number in the problem.
8,394 - 2,517 = ?
2,000+500+10+7 =
Find the difference.
6,763 - 5,498 = ?
What is 1,265.
Give a reasonable estimate for 23,852 + 17,067 =
Hint: Round each number to the nearest ten thousand.
What is 20,000 + 11,000= 31,000
What is 18,274 rounded to the nearest thousand?
What is 18,000
At a tire factory, 37,369 tires were made on Thursday and 24,984 tires were made on Friday. How many tires were made on Thursday and Friday in all?
What is 62,353 tires
Decompose the second number in the problem.
43,872 - 38,795 = _______
30,000+8,000+700+90+5
Find the sum.
35,946 + 356,285 = ?
What is 392,231.
What is a reasonable estimate for 18,801+61,290?
A. 90,000
B. 80,000
C. 77,000
D. 61,000
A reasonable estimate is B - 80,000
Melissa has 281 marbles in her collection. To the nearest hundred, about how many marbles does Melissa have?
What is 300
The High Bridge in Kentucky is 1,627 feet long. The Brooklyn Bridge in New York is 4,864 feet. What is the difference in feet of the two bridges?
What is 3,057 feet
Decompose the second number in the problem.
354,287 - 185,694 = ?
100,000+80,000+5,000+600+90+4
Find the difference.
71,395 - 6,627 = ?
What is 64,768.
Estimate the difference.
5,093 - 471 = ?
Hint: Round each number to the largest place value.
5,000 - 500 = 4,500
A roundtrip vacation for a family of 4 to Mexico costs $15,766. To the nearest thousand dollars, about how much does the trip cost?
What is 16,000
A supermarket sold 29,594 pieces of fruit one week. It sold 47,728 pieces of fruit the next week. How many pieces of fruit did the supermarket sell over the two weeks?
What is 77,322 pieces of fruit
Decompose the second number in the problem. Then, find the difference,
6,923,159 - 572,823 = ?
500,000+70,000+2,000+800+20+3
6,350,336
Find the difference.
27,400 - 5,843 = ?
What is 21,557.
A town has $4,000 to spend. Do they have enough to buy fireworks for $1,253 and cotton candy for $2,898?
Hint: Round each number to the nearest hundred.
What is $1,300+$2,900= $4,200
What number when rounded to the nearest thousand gives you 23,000?
A. 23,445
B. 23,722
C. 23,567
A. 23,445
Talky Telephone Company added unlimited calls to its phone plans. In the month before the plan started, customers made 6,148 calls. In the first month with the new plan, customers made 1,562 more calls than the previous month. The following month, customers made 844 fewer calls than the moth before the new plan. How many calls did customers make during these 3 months?
Month 1 - 6,148
Month 2 - 7,710 (6148+1562)
Month 3 - 5,304 (6148-844)
TOTAL = 19,162
Decompose both addends to find the sum.
14,563 + 8,739 = ________
10,000 +4,000+8000+500+700+60+30+3+9 =
23,302