Question

Cost of 1g of metal is $11.2. The cost of 2.6g of this metal is $

Answer 1

Cost of 1g of metal(in dollars) = $11.2$
Cost of 2.6g of metal $=11.2\times 2.6$
Steps to solve $11.2\times 2.6$
Step 1: Count the number of digits after decimal point for both the numbers and add them.i.e $1+1=2$

Step 2: Ignore a decimal point and perform the multiplication, as you would with whole numbers as follows

Step 3: Now place a decimal point back.
11.2 and 2.6 has 2 digit after decimal in total. So, move the decimal point 3 places to the left in the product

Hence, the cost of 2.6g of metal is $29.12