Test: Numbers - Class 5 MCQ

To round off to the nearest 1,000, you look at the hundreds place. If it is 5 or more, you increase the thousands digit by 1; otherwise, you keep it the same. This method simplifies large number approximations.

Arranging numbers from smallest to largest is called ascending order. This is a common practice in mathematics to help organize numbers for analysis or reporting.

To round to the nearest 100, you look at the tens place digit. In 3,42,13,211, the tens digit is 1 (less than 5), so you keep the hundreds digit the same and change the tens and ones digits to 0, resulting in 3,42,13,200.

In the Indian number system, commas are placed starting from the right after the first three digits, and then after every two digits. This helps in identifying place values easily, such as in the number 92,35,40,295.

In the number 62,14,36,754, the digit in the ten lakhs place is 1. The place values are determined by the position of each digit, and this helps in understanding how large numbers are structured.

The largest 9-digit number is 99,99,99,999.

If you add 1 to this number, you will get:

• 1,00,00,00,000 - This is a 10-digit number.
• 99,99,99,999 - This is the original number.
• 1,00,00,001 - This is not correct for our question.
• 1,00,00,000 - This is also not correct.

Therefore, the result of adding 1 to the largest 9-digit number is:

1,00,00,00,000.

The standard form is obtained by combining the place values in their correct positions, resulting in 23,40,28,762. This process illustrates how numbers can be broken down and reassembled.

The predecessor of a number is found by subtracting 1 from it. For example, the predecessor of 3,42,13,211 is 3,42,13,210. This concept is crucial for understanding sequences of numbers.

The smallest 7-digit number is formed by adding 1 to the largest 6-digit number (9,99,999), resulting in 10,00,000 (ten lakhs). This is a fundamental concept in understanding how number systems work.

The place value of 4 in 9,48,56,321 is 40,00,000 (forty lakhs), as it is in the ten lakhs place. 

The face value of a digit is simply the value of the digit itself, regardless of its position. Therefore, the face value of 5 in 45,67,89,012 is 5.

The largest 8-digit number is 9,99,99,999, which is referred to as ninety-nine crore ninety-nine lakh ninety-nine thousand nine hundred ninety-nine. Understanding the limits of number ranges is essential in mathematics.

To round off to the nearest 10, you look at the ones place digit. Since it is 7 (greater than 5), you increase the tens digit by 1 and set the ones digit to 0. Thus, it rounds to 69,33,89,430.

The Indian Number System divides large numbers into periods of ones, thousands, lakhs, and crores, making it unique compared to the International Number System which uses millions.

In the number 64,34,76,586, the tens digit is 8. Identifying specific digits within a number is essential for rounding and place value calculations.