Numbers — Practice

Question 1

How many ten thousands make one lakh?

Accepted Answer

Ten. One lakh is 1,00,000, which is 10 ten thousands or 100 thousands.

Question 2

Write the place value of 5 in 2,87,500.

Accepted Answer

5 stands in the hundreds column, so its place value is 500.

Question 3

Which is smaller, 20344 or 3241?

Accepted Answer

3241, because it has 4 digits while 20344 has 5, and a number with fewer digits is smaller.

Question 4

Write 30000 + 3000 + 300 + 30 + 3 in standard notation.

Accepted Answer

33,333.

Question 5

Place commas in 29121972 by the Indian system and write its number name.

Accepted Answer

2,91,21,972 - two crore ninety one lakh twenty one thousand nine hundred and seventy two. The first comma falls after three digits from the right, then every two.

Question 6

Arrange in ascending order: 33,270; 1,078; 137; 27,935.

Accepted Answer

Sort by number of digits first: 137; 1,078; 27,935; 33,270.

Question 7

Add 19732 + 24105 + 525 + 48.

Accepted Answer

44,410. Line the numbers up by place value and start from the ones column.

Question 8

Subtract 3,748 from 67,056.

Accepted Answer

67,056 - 3,748 = 63,308.

Question 9

Multiply 854 by 21.

Accepted Answer

854 x 1 = 854 and 854 x 20 = 17,080. Adding gives 17,934.

Question 10

Find the quotient and remainder for 5732 divided by 9, then check your answer.

Accepted Answer

Quotient 636, remainder 8. Check with dividend = divisor x quotient + remainder: 9 x 636 + 8 = 5724 + 8 = 5732.

Question 11

A car factory produces 3750 cars in a month of 30 days. How many cars are produced per day?

Accepted Answer

3750 divided by 30 = 125 cars per day, with no remainder.

Question 12

Find the sum of the greatest 4-digit number and the smallest 5-digit number.

Accepted Answer

The greatest 4-digit number is 9999 and the smallest 5-digit number is 10000, so the sum is 19,999.

Practice — Numbers

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