Question

how to do ADDITION AND SUBSTRACTION .pls help me​

Answer 1

Answer:

Addition

1. Line up the numbers you want to add so their ends are in line.
2. Add up the right-most column.
3. If your total is less than ten, write the total under the column. ...
4. Go to the next column to the left and add up the numbers – and add any numbers you've written below this column.

Subtraction

When you subtract one number from another, the result is called the difference. This term makes sense when you think about it: When you subtract, you find out the difference between a higher number and a lower one. In subtraction, the first number is called the minuend, and the second number is called the subtrahend

Answer 2

Kindly note : for addition step 4) no need to write the numbers below the column write as a superscript on the top .

like : 7 9

+ 5 8

_________

13 7

so 9 +8 = 17 so i write 7 below 9 and 8 and 1 as superscript I add to 7 to the next column .