132k views
5 votes
Use properties of addition to find each sum mentally. Show your steps and identify the properties that you used. 9+6+31=

1 Answer

3 votes
To do this addition mentally, you should do like this:

31 requires 9 more to become 40 and since we have a nine in our question, we would first do 31 + 9 = 40. Now you would finish it off with the remaining number which is six. 40 + 6 = 46.

Steps:
31 + 9 = 40
40 + 6 =46

Therefore, your answer would 46.
User Oakcool
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories