carpenters
They need to know about decimals, fractions, and percents because they need to know the exact measures of the things they are designing.
Use the GCF to reduce fractions. Use the LCM to add and subtract unlike fractions. Carpenters work with fractions a lot.
Carpenters need to be able to use fractions in order to construct furniture, walls, and other things properly. Being off a fraction of an inch can lead to very undesirable consequences when building things.
Mostly geometry, adding, subtracting fractions and decimals.
Prime factors are part of prime factorizations. Prime factorizations help in finding the GCF and LCM of integers. Finding the GCF helps in reducing fractions. Finding the LCM helps in adding and subtracting unlike fractions. Carpenters do this. Chefs do this. It's entirely possible you will have no need of this, but it's better to know something and not need to use it then not know something you need to use. If you have children of your own, you can help them with their math homework.
Chefs, carpenters, anyone who has to add, subtract or simplify fractions.
You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.
When you are adding or subtracting fractions.
because they don't know how to use decimals
Yes. But I need this answer too. I just dont know which fractions they are.
Fractions make you life easier because if you at the grociry store if it's 75% of a item you will need to know that. and fraction you need to know in a lot of jobs. Madison M.