It helps you narrow down to a smaller answer for example there is pi, (3.14159265359) and there is more and more to that number. It is now estimated to 3.14 because it would be almost impossible to work with pi if it wasn't estimated
50a + 20w is greater than or equal to 350
You can simplifying 24/3 by dividing 24 by 3.
24÷3=8
The answer is 8.
He bought three $10 shirts and six $7 shirts.
