Answer :
Place value can help us in making everyday decision , for example costs, weights, distances. we use the base 10 in our number system, such as tens, hundreds and thousands. If we are not aware of the place value , it may affect our living. It may compromise our wealth or earnings. we might be paying more than what was necessary. We may get less from what is right (for example in the market when we buy meat and the likes). It is important to know place value since the world around us operates in a system that uses it.
For example , the price of a shirt is $10, therefore you just have to pay $10. if you are not aware of the place value you might be paying $100 or $ 0.10 for it , which is not right.
also, in the market , in reading the weight reflected in the scale , say you buy pork . you should know if it is 1 kilo or 10 kilo, so you can pay the right price for what you are buying.
you can't even use your money correctly if you dont know what place value is. you might think $10 is $100 or vice cersa. So yoy will be using your money the wrong way if that;s the case.