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Printable Worksheet: Place Value and Rounding - 1 | Mathematics for Class 3: NCERT PDF Download

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 Page 1


Build a 3-digit number from the parts
Example:    836 = 800 + 30 + 6
Write the 3-digit numbers
1.
200 + 50 + 7
2.
800 + 20 + 4
3.
400 + 40 + 9
4.
900 + 80 + 6
5.
700 + 90 + 1
6.
800 + 60 + 8
7.
800 + 8
8.
500 + 5
9.
900 + 40 + 8
10.
500 + 10 + 9
11.
500 + 60 + 3
12.
500 + 20 + 7
13.
400 + 50
14.
900 + 80
15.
500 + 60 + 8
16.
500 + 50 + 4
17.
300 + 40 + 5
18.
100 + 20
Page 2


Build a 3-digit number from the parts
Example:    836 = 800 + 30 + 6
Write the 3-digit numbers
1.
200 + 50 + 7
2.
800 + 20 + 4
3.
400 + 40 + 9
4.
900 + 80 + 6
5.
700 + 90 + 1
6.
800 + 60 + 8
7.
800 + 8
8.
500 + 5
9.
900 + 40 + 8
10.
500 + 10 + 9
11.
500 + 60 + 3
12.
500 + 20 + 7
13.
400 + 50
14.
900 + 80
15.
500 + 60 + 8
16.
500 + 50 + 4
17.
300 + 40 + 5
18.
100 + 20
Build a 3-digit number from the parts
Example:    836 = 800 + 30 + 6
Write the 3-digit numbers
1.
257 200 + 50 + 7
2.
824 800 + 20 + 4
3.
449 400 + 40 + 9
4.
986 900 + 80 + 6
5.
791 700 + 90 + 1
6.
868 800 + 60 + 8
7.
808 800 + 8
8.
505 500 + 5
9.
948 900 + 40 + 8
10.
519 500 + 10 + 9
11.
563 500 + 60 + 3
12.
527 500 + 20 + 7
13.
450 400 + 50
14.
980 900 + 80
15.
568 500 + 60 + 8
16.
554 500 + 50 + 4
17.
345 300 + 40 + 5
18.
120 100 + 20
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FAQs on Printable Worksheet: Place Value and Rounding - 1 - Mathematics for Class 3: NCERT

1. What is place value in mathematics?
Ans. Place value is a fundamental concept in mathematics that determines the value of each digit in a number based on its position. In a decimal number system, each digit's value is ten times greater than the digit to its right. For example, in the number 345, the digit 4 represents 40 because it is in the tens place, while the digit 5 represents 5 because it is in the ones place.
2. How does rounding work in mathematics?
Ans. Rounding is a process in mathematics where a number is approximated to a specified degree of accuracy. To round a number, one must determine which place value to round to and follow the rules. If the digit to the right of the rounding position is 5 or greater, the rounding position digit is increased by 1. If the digit is less than 5, the rounding position digit remains the same. For example, rounding 3.76 to the nearest tenth would result in 3.8, as the digit in the hundredth place is 6.
3. How can place value and rounding be applied in real-life situations?
Ans. Place value and rounding are essential in various real-life situations. For instance, when dealing with money, rounding can help simplify calculations or estimate costs. Place value is also crucial when reading and writing large numbers, such as measuring distances, populations, or quantities. Understanding place value and rounding helps in accurately interpreting and representing data in fields like statistics, finance, and science.
4. Are there any rules for rounding numbers with decimal places?
Ans. Yes, there are rules for rounding numbers with decimal places. When rounding to a specific decimal place, such as the tenths or hundredths place, follow these rules: If the digit to the right of the rounding position is 5 or greater, round up by increasing the rounding position digit by 1. If the digit is less than 5, the rounding position digit remains the same. However, if the digit to the right of the rounding position is exactly 5, round to the nearest even number. For example, rounding 4.35 to the nearest tenth would result in 4.4, while rounding 4.45 to the nearest tenth would result in 4.4 as well.
5. How can place value and rounding be used to solve word problems?
Ans. Place value and rounding can be used to solve word problems by helping us better understand and interpret the given information. By identifying the place value of the digits involved, we can accurately calculate and estimate the values needed to solve the problem. Rounding can simplify the numbers involved, making them easier to work with. For example, if a word problem involves calculating the total cost of items priced at $9.99 each, rounding the price to $10 can make the calculation simpler without significantly affecting the accuracy of the final answer.
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