Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 5th
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# Introducing a 5 Digit Number - 10,000

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# Introducing a 5 Digit Number - 10,000:

We know that 99 is the greatest 2-digit number.
Similarly, the greatest 3-digit number is 999 and the greatest 4-digit number is 9999.
Look at the pattern:
9 + 1 = 10 = 10 × 1
99 + 1 = 100 = 10 × 10
999 + 1 = 1000 = 10 × 100

We observe that

• Greatest single digit number + 1 = smallest 2-digit number
(9 + 1 = 10)
• Greatest 2-digit number + 1 = smallest 3-digit number
(99 + 1 = 100)
• Greatest 3-digit number + 1 = smallest 4-digit number
(999 + 1 = 1,000)
• Moving forward, We should then expect that on adding 1 to the greatest 4-digit number, we would get the smallest 5-digit number, that is 9999 + 1 = 10000 and it is known as ten thousand.
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Introducing a 5 Digit Number - 10,000 [00:05:31]
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