Question

Round to estimate the answer, and then solve to find the correct answer. Explain whether your estimate was reasonable: A T. Rex dinosaur eats ten twelfths of a plant and then eats two twelfths of the plant later. How much of the plant did the dinosaur eat in total?

Answer 1

1 plant

Explanation:

The T.Rex dinosaur eats ten twelffths of a plant and later eats two twelfths of a plant. In total, the T.Rex dinosaur ate:

`(10)/(12) + (2)/(12) =(12)/(12)=1`

Therefore, the dinsaur in total ate one entire plant.

It's better to solve the problem by using fractions instead of decimals. If we had used decimals the response would be the following:

`0.833333+0.166666=0.999999` which can be rounded to 1.