Answer :
- The odd numbers from twenty-one to thirty are:
- Twenty-one
- Twenty-three
- Twenty-five
- Twenty-seven
- Twenty-nine
- The even numbers from thirty-one to forty are:
- Thirty-two
- Thirty-four
- Thirty-six
- Thirty-eight
- Forty
- To find the answer to twenty-one plus twenty-one, you add the numbers together:
[tex]21 + 21 = 42[/tex]
So, the answer is forty-two.
- For the subtraction forty minus ten, you subtract ten from forty:
[tex]40 - 10 = 30[/tex]
Thus, the answer is thirty.
- For the subtraction of fifty minus thirty, you subtract thirty from fifty:
[tex]50 - 30 = 20[/tex]
Therefore, the answer is twenty.