Place Value and Rounding — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. What is 3,985 rounded to the nearest hundred?
A) 3,900
B) 3,980
C) 4,000
D) 4,100
The correct answer is C) 4,000. What is 3,985 rounded to the nearest hundred — the answer is 4,000.
2. Which digit is in the ten-thousands place of 7,614,283?
A) 7
B) 6
C) 1
D) 4
The correct answer is C) 1. Which digit is in the ten-thousands place of 7,614,283 — the answer is 1.
3. A number rounds to 850,000 at the nearest ten-thousand. Which could it be?
A) 843,200
B) 838,750
C) 854,999
D) 856,100
The correct answer is C) 854,999. A number rounds to 850,000 at the nearest ten-thousand. Which could it be — the answer is 854,999.
4. What is 5,555,555 rounded to the nearest hundred-thousand?
A) 5,500,000
B) 5,550,000
C) 5,600,000
D) 6,000,000
The correct answer is C) 5,600,000. What is 5,555,555 rounded to the nearest hundred-thousand — the answer is 5,600,000.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A number rounded to the nearest thousand is 83,000. The largest whole number it could be is 83,499
Any number from 82,500 to 83,499 rounds to 83,000. At 83,500, the hundreds digit is 5, which would round up to 84,000, so 83,499 is the largest that still rounds down.
2. The digit 6 in 6,000,000 is 100 times greater than the digit 6 in 60,000.
The 6 in 6,000,000 has a value of six million, while the 6 in 60,000 has a value of sixty thousand. Dividing 6,000,000 by 60,000 gives 100.
3. A library has 2,456,830 books. Rounded to the nearest million, that is 2,000,000 books.
The hundred-thousands digit is 4, which is less than 5, so 2,456,830 rounds down to 2,000,000.
4. 695,500 rounded to the nearest thousand is 696,000
The hundreds digit is 5, so the thousands digit rounds up from 5 to 6, giving 696,000.
5. In 8,203,475, the sum of the values of the digits 2 and 4 is 200,400
The digit 2 is in the hundred-thousands place (value 200,000) and the digit 4 is in the hundreds place (value 400). Adding 200,000 + 400 gives 200,400.