Question

Estimate.

-49/100 + 10/21 = ?

a. -1
b. 0
c. 1
d. 2

20 points! Please help! And hurry!

Answer 1

0 (b)

Explanation:

So we're estimating in this one.

we can round -49/100 to -50/100 and 10/21 to 10/20

Then we can get a common denominator

10/20 will become 50/100

so

-50/100 + 50/100 = 0

So your answer is b.

Answer 2

B. 0

Explanation:

-49/100 + 10/21

They are both about half

Therefore, since one is negative and the other is a positive they would equal about .02 which the closest number out of the 4 answers would be B. 0