Test: Rounding off Numbers - Class 5 MCQ

Let’s round 1234 to the nearest ten step-by-step:

1. Identify the Tens Place:
   In 1234, the digit in the tens place is 3.

2. Look at the Next Digit (Ones Place):
   The digit in the ones place is 4.

3. Apply the Rounding Rule:
   Since the ones digit (4) is less than 5, we round down.

4. Keep the Tens Digit the Same:
   The 3 stays the same, and the ones place becomes 0
   1234 rounded to the nearest ten is 1230.

Let's round 789,221 to the nearest ten thousand step-by-step:

1. Identify the Ten Thousand Place:
   In 789,221, the digit in the ten thousand place is 8.

2. Look at the Next Digit (Thousand Place):
   The digit in the thousand place is 9.

3. Apply the Rounding Rule:
   Since the thousand place digit (9) is 5 or more, we round up.

4. Increase the Ten Thousand Digit by 1:
   8 becomes 9, and all digits to the right become 0.

5. Final Answer:
   789,221 rounded to the nearest ten thousand is 790,000.

Let's round 26 to the nearest ten step-by-step:

1. Identify the Tens Place:
   In 26, the digit in the tens place is 2.

2. Look at the Next Digit (Ones Place):
   The digit in the ones place is 6.

3. Apply the Rounding Rule:
   Since the ones digit (6) is 5 or more, we round up.

4. Increase the Tens Digit by 1:
   2 becomes 3, and the ones place becomes 0.

5. Final Answer:
   26 rounded to the nearest ten is 30.

Explanation

Let's round 52,967 to the nearest hundred step-by-step:

• Identify the Hundreds Place:
  In 52,967, the digit in the hundreds place is 9.

• Look at the Next Digit (Tens Place):
  The digit in the tens place is 6.

• Apply the Rounding Rule:
  Since the tens digit (6) is 5 or more, we round up.

• Increase the Hundreds Digit by 1:
  9 becomes 10, which carries over, making the number 53,000.

• Final Answer:
  52,967 rounded to the nearest hundred is 53,000.

1. Identify the digit in the thousands place:
   15768 → The digit in the thousands place is 5.

2. Look at the digit in the hundreds place (the next smaller place value):
   15768 → The digit in the hundreds place is 6.

3. Apply the rounding rule:

   Since the hundreds digit is 6, we increase the thousands digit by 1
   If the hundreds digit is 5 or more, increase the thousands digit by 1.
   If it is 4 or less, keep the thousands digit the same.

4. Replace all digits after the thousands place with zeros:
   15768 becomes 16000.

So, 15768 rounded to the nearest thousand is 16000.

Calculation:

• Identify the Tens Place:
  In 245, the digit in the tens place is 4.

• Look at the Next Digit (Ones Place):
  The digit in the ones place is 5.

• Apply the Rounding Rule:
  Since the ones place digit (5) is 5 or more, we round up.

• Increase the Tens Digit by 1:
  4 becomes 5, and the ones place becomes 0.

• Final Answer:
  245 rounded to the nearest ten is 250.

To round 738 to the nearest hundred:

1. Identify the digit in the hundreds place:
   738 → The digit in the hundreds place is 7.

2. Look at the digit in the tens place (the next smaller place value):
   738 → The digit in the tens place is 3.

3. Apply the rounding rule:

   Since the tens digit is 3, we keep the hundreds digit the same.
   If the tens digit is 5 or more, increase the hundreds digit by 1.
   If it is 4 or less, keep the hundreds digit the same.

4. Replace all digits after the hundreds place with zeros:
   738 becomes 700.

• Identify the digit in the ten-thousands place:
  29351 → The digit in the ten-thousands place is 2.

• Look at the digit in the thousands place (the next smaller place value):
  29351 → The digit in the thousands place is 9.

• Apply the rounding rule:

  • If the thousands digit is 5 or more, increase the ten-thousands digit by 1.
  • If it is 4 or less, keep the ten-thousands digit the same.

  Since the thousands digit is 9, we increase the ten-thousands digit by 1.

• Replace all digits after the ten-thousands place with zeros:
  29351 becomes 30000.

To round 2,749,817 to the nearest ten thousand:

• Identify the ten thousand's place: 4 (since 2,749,817 is between 2,740,000 and 2,750,000).
• Look at the digit to the right (thousands place): 9.
• If this digit is 5 or more, round up. Since 9 is greater than 5, round up.
• Increase 4 to 5, making the number 2,750,000.

Thus, the correct option is C: 2,750,000.

To round 629,636 to the nearest lakh:

1. Identify the digit in the lakhs place:

   • In 629,636, the digit in the lakhs place is 6 (from 629,636).

2. Look at the digit in the ten-thousands place:

   • The digit in the ten-thousands place is 2 (from 629,636).

3. Apply the rounding rule:

   • If the ten-thousands digit is 5 or more, increase the lakhs digit by 1.
   • If it is 4 or less, keep the lakhs digit the same.

   Since the ten-thousands digit is 2, which is less than 5, we keep the lakhs digit the same.

4. Replace all digits after the lakhs place with zeros:

   • The result is 600,000.