1 one plus one is/equals two
2 two minus one is/equals one
3 one multiplied by one is/equals one 或者 one times one is/equals one
4 one divided by one is/equals one
1 one plus one is/equals two
2 two minus one is/equals one
3 one multiplied by one is/equals one 或者 one times one is/equals one
4 one divided by one is/equals one