Question

What number is 10 more than 9? Explain or show how you know

Answer 1

"More than" means addition. Add the number before the word "more than" (10 in this case) to the number after "more than" (9 in this case).

10 more than 9 is 9 + 10 = 19.

*If it was "10 less than 9", the expression would be 9 - 10 = -1.

Answer 2

Let

x---------> the number

The equation that represent this situation is

$x=10+9$

$x=19$

therefore

the answer is

The number is $19$