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Thought-Process to Discover Knowledge

Welcome to nubtrek.

Books and other education websites provide "matter-of-fact" knowledge. Instead, nubtrek provides a thought-process to discover knowledge.

In each of the topic, the outline of the thought-process, for that topic, is provided for learners and educators.

Read in the blogs more about the unique learning experience at nubtrek.

In this page, a simple overview of the divisibility test for 10 is provided.

click on the content to continue..

Which of the following are multiples of 10?

• 20,35,40,55, cdots
• 10,20,30,40,cdots
• 10,20,30,40,cdots

The answer is "10,20,30,40,cdots"

Consider the multiples of 10 given as 10,20,30,40,cdots. Is there any similarity observed in the multiples?

• all have digit 0 in the units place
• there is no similarity observed
• there is no similarity observed

The answer is "all have digit 0 in the units place". That is, all are ending in 0

Numbers with 0 in units place are divisible by 10.

Consider the numbers 20 and 24, which of these is divisible by 10?

• 24
• 20
• 20

The answer is "20"

Test for Divisibility by 10 : If the digit in the units place is 0, then the number is divisible by 10.

Is 2008 divisible by 10?

• Yes
• No
• No

The answer is "No". Checking the digit in units place 8, it is concluded that the number is not divisible by 10.

Is 920 divisible by 10?

• Yes
• Yes
• No

The answer is "Yes". Checking the digit in units place 0, it is concluded that the number is divisible by 10.

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