Envision Math 4th Grade Textbook Answer Key Topic 2.2 Rounding Whole Numbers
Rounding Whole Numbers
How can you round numbers?
Round 293,655,404 to the nearest thousand and to the nearest hundred thousand. You can use place value to round numbers.
Do you know HOW?
In 1 through 6, round each number to the place of the underlined digit.
Do You Understand ?
Writing to Explain Explain how to round a number when 7 is the digit to the right of the rounding place.
In 2000 the population of the United States was 281,421,906. Round 281,421,906 to the nearest hundred thousand.
Leveled Practice In 9 through 28, round each number to the place of the underlined digit. You may use a number line to help you.
Round 293,655,404 to the nearest thousand.
If the digit to the right of the rounding place is 5 or more, add 1 to the rounding digit. If it is less than 5, leave the rounding digit alone.
Since 4 < 5, leave the rounding digit as is. Change the digits to the right of the rounding place to zeros.
So, 293,655,404 rounds to 293,655,000.
Round 293,655,404 to the nearest hundred thousand.
The digit to the right of the rounding place is 5.
Since the digit is 5, round by adding 1 to the digit in the hundred thousands place.
So, 293,655,404 rounds to 293,700,000.
For each zoo in the chart, round the attendance to the nearest hundred thousand.
Reasoning Which zoo had the greatest number of visitors?
Number Sense Write four numbers that round to 700 when rounded to the nearest hundred.
Reasoning Write a number that when rounded to the nearest thousand and hundred will have a result that is the same.
Jonas read that about 1,760,000 people will graduate from high school in California in the next four years. Jonas thinks this number
is rounded to the nearest ten thousand. What would the number be if it was rounded to the nearest hundred thousand?
Liz had attended class every day since she started school as a kindergartner. She said she had been in school for about 1,000 days. What could the actual number of school days be if she rounded to the nearest ten?
When rounded to the nearest ten thousand, which number would be rounded to 120,000?
A fruit market sold 3,849 apples, 3,498 oranges, and 3,894 pears in one day. Write these numbers in order from greatest to least.