Question

One tenth plus four ninths what is it

Answer 1

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What do you think the answer is?

Answer 2

One-tenth = 1/10
Four ninths = 4/9
Sum = 1/10 + 4/9
1 is close to 0, so 1/10 ~ 0/10 = 0
4 is close to 5 and 9 close to 10, so 4/9 ~ 5/10 = 1/2

Sum of 0 and 1/2 is 1/2.

The answer is one-half (1/2).