Which is the best estimate for the sum of 2 /9 + 10 /11 ?

A. 0 + 0 = 0
B. 1/2 + 1/2 = 1
C. 1 + 1 = 2
D. 0 + 1 = 1

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choixongdong choixongdong · Answer 1 · 2018-02-07T15:59:41+01:00

2 /9 + 10 /11

estimate
2/9 < 1/2 and close to 0 so 2 /9 = 0
10/11 < 1 but close to 1 so 10 /11 = 1

so 0 + 1 = 1

answer
D. 0 + 1 = 1

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AFOKE88 AFOKE88 · Answer 2 · 2021-11-08T13:14:52+01:00

The best estimate for the sum of 2/9 and 10/11 is;

Option D; 0 + 1 = 1.

Estimate simply means approximating the number to the nearest whole number.

Now we have 2/9 and 10/11.

Thus;

2/9 is closer to 0 than 0.5 and as such we will estimate it as 0.

Similarly, 10/11 is closer to 1 than 0.5 and so we will estimate it as 1.

Therefore the sum of their estimates gives;

0 + 1 = 1

In conclusion, the best estimate for the sum of 2/9 and 10/11 is 0 + 1 = 1.

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