For homework Brooke has 15 math problem son social study problems and 5 science problems she has 29 problems in all use mental m ath to determine how many problems she has for social studies tell which property you used
1 answer:
Answer:
Brooke has 9 problems for social studies.
Step-by-step explanation:
I used addition. I did 15 + 5 = 20. and after that I just knew that you have to add 9 to 20 to get 29, so I figured out that she has 9 social studies problems.
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