"I will demonstrate that the sum of an odd number and an even number is equal to an odd number."
"How to explain that the sum of an odd and even number equals an odd number."
- "I will demonstrate that the sum of an odd number and an even number is equal to an odd number."
"I will demonstrate" 「証明する」"I will prove" も使えます。
"odd number" 「奇数」
"even number" 「偶数」
"sum" 「和」・「たす」
"equals" 「＝」
"the sum of an odd number and an even number is equal to an odd number" 「奇数と偶数の和が奇数になること」
- "How to explain that the sum of an odd and even number equals an odd number."
"how to explain~" 「〜をどうやって説明するか」
We’re learning how to prove that the sum of an odd number and an even number is odd.
We’re learning how to prove that the sum of an odd number and an even number is odd.
We’re learning how to explain why an odd number plus an even number is always odd.
In math class, we’re proving that odd + even = odd.
英語で「証明する」は prove が基本です。学校の会話なら “We’re learning how to prove …” が自然です。
一方、「証明というより、説明の仕方を習っている」ニュアンスなら “explain why …” や “show that …” を使うとやわらかくなります。
オーストラリア 
アメリカ合衆国 
