By how much is less than ?
Important Points to Remember in Chapter -1 - Simple Addition and Subtraction from Asit Das Gupta Junior Maths 3 Solutions
(i) Addition of numbers can be done with regrouping and without regrouping.
(ii) Steps of addition:
(a) Arrange the numbers as per the place value chart.
(b) Add the digits in each column starting from the ones place.
(c) Regroup if the sum of digits in a column is more than .
(iii) Double of the number is obtained by adding the number to itself.
(iv) Addition is performed when we need to find the total number of items.
2. Subtraction:
(i) Subtraction of numbers can be done with regrouping and without regrouping.
(ii) Steps of subtraction:
(a) Arrange the numbers as per the place value chart.
(b) Subtract the digits in each column starting from the ones place.
(c) Regroup if the digit in the minuend of a column is less than the digit in the subtrahend of the same column.
(iii) Subtraction can be used to solve word problems.
3. Addition and Subtraction Together:
Whenever addition and subtraction operations come together in a problem, do the operation that is given first from left to right.
