Question

Bill says he can add 23 and 40 without regrouping. Is bill correct? How do you know?

Answer 1

Yes Bill is correct because
3+0 you don't have to regroup
And 4+2 you don't have to regroup
hope this helps

Answer 2

Explanation:

Yes bill is correct because both numbers are easy to add without regrouping, since when each of the digit are added there won't be carried over. Also, I believe Bill should be able to do simple mathematics like 2+3, 3+5 and so on.

Then, he should be able to add 3 plus 0 in his head and keep the result as 3. And then add the other 2+4 and he will put the two result together as 63