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Chapter: 6th Maths : Term 1 Unit 1 : Numbers

Summary

6th Maths : Term 1 Unit 1 : Numbers : Summary

Summary

Use of commas helps us in reading and writing large numbers.

Use of commas differs in the Indian and the International Systems.

Comparing any two numbers, the one with more digits is larger.

Comparing any two numbers, if the digits are the same, the number that has a greater left most digit is larger.

● Using BIDMAS, we can avoid the common arithmetic mistakes.

Large numbers are needed for various situations in our daily life.

The situations where we do not need the exact quantity give rise to estimation or approximation.

Estimation is approximating a quantity to a reasonable accuracy.

Rounding of a number involves in getting a quick, desired and rough estimate of it.

If zero is included in the collection of Natural numbers (N), we get the collection of Whole numbers (W), W = {0, 1, 2, …}.

‘0’ is the smallest whole number.

‘0’ and ‘1’ are the additive and multiplicative identities of whole numbers respectively.

Whole numbers can be added or multiplied in any order and hence Commutative.

Multiplication of Whole numbers is both Commutative and Associative.

Multiplication is Distributive over addition for Whole numbers.

● Division by ‘0’ is not defined.

 

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6th Maths : Term 1 Unit 1 : Numbers


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