Rounding Numbers Challenge

Estimate the sum of 45,678 and 23,456 to the nearest ten thousands.

• 50,000

• 60,000

• 70,000

• 80,000

Answer explanation

To estimate the sum of 45,678 and 23,456 to the nearest ten thousands, round each number to the nearest ten thousands and then add them. 45,678 rounds to 50,000 and 23,456 rounds to 20,000. Adding these rounded numbers gives 70,000.

If you round 67,89,123 to the nearest crore, what is the result?

• 5 crore

• 10 crore

• 2 crore

• 1 crore

Answer explanation

Rounding 67,89,123 to the nearest crore gives 1 crore, which is the correct choice.

In a real-life scenario, if you have 34,50,678 rupees and you round it to the nearest lakh, how much money do you have?

• 34,60,000 rupees

• 34,00,000 rupees

• 34,50,500 rupees

• 35,00,000 rupees

Answer explanation

Rounding 34,50,678 rupees to the nearest lakh gives 35,00,000 rupees, which is the correct choice.

Round 98,76,543 to the nearest ten lakhs.

• 1,00,00,000

• 90,00,000

• 1,05,00,000

• 95,00,000

Answer explanation

To round 98,76,543 to the nearest ten lakhs, we look at the digit in the ten lakhs place, which is 9. Since it is MORE than 5, we round off to 1,00,00,000.

What is the result of rounding 12,34,567 to the nearest lakh?

• 12,40,000

• 12,00,000

• 12,35,000

• 12,30,000

Answer explanation

Rounding 12,34,567 to the nearest lakh gives 12,30,000, as the digit in the ten thousands place is 3, which means rounding down.

Estimate the difference between 8,765,432 and 2,345,678 to the nearest millions .

• 4,000,000

• 5,000,000

• 6,000,000

• 7,000,000

Answer explanation

To estimate the difference between 8,765,432 and 2,345,678 to the nearest millions, we round both numbers to the nearest crore. 8,765,432 rounds to 9,000,000 and 2,345,678 rounds to 2,000,000. The difference between 9,000,000 and 2,000,000 is 7,000,000.

If you round 3,210,987 to the nearest thousand, what is the new number?

• 3,211,000

• 3,210,500

• 3,211,500

• 3,210,900

Answer explanation

Rounding 3,210,987 to the nearest thousand gives 3,211,000, as the last three digits are 987 which is closer to 1000.

Round 7,654,321 to the nearest millions .

• 8,500,000

• 8,000,000

• 7,000,000

• 7,500,000

Answer explanation

To round 7,654,321 to the nearest millions, we look at the digit in the 100 thousands place, which is 6. Since it is more than 5, result is 8,000,000.

In a real-life scenario, if you have 2,345,678 rupees and you round it to the nearest ten thousand, how much money do you have?

• 2,340,000

• 2,400,000

• 2,350,000

• 2,300,000

Answer explanation

When rounding 2,345,678 to the nearest ten thousand, the digit in the thousand place (5) determines the rounding. Since 5 or more rounds up, the answer is 2,350,000.

Estimate the sum of 12,34,567 and 87,65,432 to the nearest ten lakhs.

• 12 crore

• 11 crore

• 1 crore

• 10 crore

Answer explanation

To estimate the sum of 12,34,567 and 87,65,432 to the nearest ten lakhs , we get 1 crore as the closest value to the actual sum.