Word Problem: Numeration | Mathematics for Class 4 PDF Download

Q1: If you have 3 hundreds, 4 tens, and 2 ones, what number do you have? 

Ans: 3 hundreds means 300, 4 tens means 40, and 2 ones means 2. 

Adding them together: 300 + 40 + 2 = 342.

The number is 342.  

Q2: You have 500 marbles. Your friend gives you 150 more marbles. How many marbles do you have now? 

Ans: You have 650 marbles. 

Start with 500 marbles, add 150 more: 500 + 150 = 650

Q3: Sarah has 7,200 stickers. She gives away 1,500 stickers to her friends. How many stickers does she have left?

Ans: Sarah has 5,700 stickers left. 

Begin with 7,200 stickers, subtract 1,500: 7,200 - 1,500 = 5,700.

Q4: If the greatest 5-digit number is 99,999, what is the successor of this number?
Ans: To find the successor of the greatest 5-digit number, we simply add 1 to it:
Greatest 5-digit number + 1 = Successor
99,999 + 1 = 1,00,000

Q5: If you add 1 to the number 1,00,000, what number do you get, and how many digits does it have?
Ans: Adding 1 to 1,00,000 gives us the next number, which has 6 digits as well:
1,00,000 + 1 = 1,00,001

Q6: If you write the number 23,344 in expanded notation, what is its expanded form?
Ans: Writing 23,344 in expanded notation gives its place value breakdown:
23,344 = 20,000 + 3,000 + 300 + 40 + 4

Q7: If you have the numbers 12,675, 6,532, 62,392, 18,125, and 29,358, how would you arrange them in ascending order?
Ans: Arranging the given numbers in ascending order:
6,532 < 12,675 < 18,125 < 29,358 < 62,392

Q8: Sarita wants to round off her weight to the nearest ten. If she currently weighs 42 kg, what would her rounded weight be?
Ans: Since the ones digit is 2, which is less than 5, we round down. So, Sarita's weight rounded to the nearest ten would be 40 kg.
Note: When rounding off to the nearest ten, we look at the ones digit. If it's 5 or greater, we round up; if it's less than 5, we round down.

Q9: If you have 1 lakh rupees and add ₹1 to it, what is the new amount in numerical form?
Ans: Adding ₹1 to 1 lakh gives us 1,00,001.
In the Indian numeral system, 1 lakh plus 1 equals 1 lakh and 1 rupee.

Q10: What is the difference in place value between the digit 5 in the number 56,789 and the digit 5 in the number 5,678?
Ans: The place value of 5 in 56,789 is 5,000, while the place value of 5 in 5,678 is 50. So, the difference is 4,950.
Note: Place value is determined by the position of the digit in the number. In the first number, 5 is in the thousands place, while in the second number, it's in the tens place.