Students identify the standard form of an expanded number, describe a mystery number with 4 in the millions and 7 in the hundreds places, and round 3,456,789 to the nearest hundred-thousand. Part B has five fill-in-the-blank problems about Earth's distance rounded to the nearest million, a mystery number with two rounding clues, and the largest non-repeating 7-digit number.
Mystery number problems develop reverse thinking — working from rounded values back to the original constraints — which deepens place value understanding.
Style:
Place Value and Rounding
Part A: Multiple Choice
Circle the best answer for each question.
1. Which number equals 300,000 + 50,000 + 200 + 40 + 8?
A) 350,248
B) 305,248
C) 350,284
D) 35,248
2. A number has a 4 in the millions place and a 7 in the hundreds place. All other digits are 0. What is the number?
A) 4,700,000
B) 4,070,000
C) 4,007,000
D) 4,000,700
3. What is 3,456,789 rounded to the nearest hundred-thousand?
A) 3,400,000
B) 3,450,000
C) 3,500,000
D) 3,460,000
4. Which symbol makes this true: 2,054,300 ___ 2,045,300?
A) <
B) >
C) =
D) Cannot tell
Part B: Fill in the Blank
Write the correct answer on each line.
1. Earth is about 92,960,000 miles from the Sun. Rounded to the nearest million, that is 93,000,000 miles.
2. The mystery number has 6 digits. It rounds to 540,000 at the nearest ten-thousand and 500,000 at the nearest hundred-thousand. The ten-thousands digit is 4
3. Write the largest 7-digit number where no digit repeats: 9,876,543
4. A stadium seats 78,450 people. Rounded to the nearest thousand, that is 78,000
5. The difference between the place value of 5 in 5,400 and 5 in 3,500 is 4,900
Place Value and Rounding
★ Part A: Multiple Choice
Circle the best answer for each question.
1. Which number equals 300,000 + 50,000 + 200 + 40 + 8?
A) 350,248
B) 305,248
C) 350,284
D) 35,248
2. A number has a 4 in the millions place and a 7 in the hundreds place. All other digits are 0. What is the number?
A) 4,700,000
B) 4,070,000
C) 4,007,000
D) 4,000,700
3. What is 3,456,789 rounded to the nearest hundred-thousand?
A) 3,400,000
B) 3,450,000
C) 3,500,000
D) 3,460,000
4. Which symbol makes this true: 2,054,300 ___ 2,045,300?
A) <
B) >
C) =
D) Cannot tell
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) Earth is about 92,960,000 miles from the Sun. Rounded to the nearest million, that is 93,000,000 miles.
2) The mystery number has 6 digits. It rounds to 540,000 at the nearest ten-thousand and 500,000 at the nearest hundred-thousand. The ten-thousands digit is 4
3) Write the largest 7-digit number where no digit repeats: 9,876,543
4) A stadium seats 78,450 people. Rounded to the nearest thousand, that is 78,000
5) The difference between the place value of 5 in 5,400 and 5 in 3,500 is 4,900
Ready to Practice?
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9 Questions
12-18 minutes
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