Question

Please help me in teaching decimal addition, subtraction, multiplication and division

Answer 1

i) for decimal addition write the decimal no. one below the other with the decimals :
1.06
+5.20
now do normal addition and place the decimal below the decimal point. So answer is 6.26.
ii) for subtraction follow the same steps but make sure that the decimal places of one number i.e digits after decimal are placed below the decimal number number of other number. carrying over is done normally no special rules.
iii) for multiplication do normal multiplication of both the numbers and then count the total decimal places and add the decimal in the product.