Explain why we use estimation when we add or subtract. how might it us when do we use it in everyday life provide examples

We use estimation beacause;

Esimation helps us because for example, if there were a can of jellybeans and you had to know the right amount, because you wanted to sell them, and had to put the exact number of jellybeans, then estimation would be about that exact number of jellybeans.  Or estimating how much money you earned in your work, or what you shopped for, estimating helps us in everyday life. If you need more examples feel free to ask me.

Hope helps!-Aparri

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !

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