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Mathematics 9 Online
OpenStudy (ace_santiago1):

The teacher bought a sticker for each of her students. There are 30 students in her class. If she gave 15 away, how many does she have left? A: 10 B: 15 C: 16 D: none

OpenStudy (rivershinesdragon):

So, what operation are we using?

OpenStudy (ace_santiago1):

idk im only in thhe 3rd hrade math is confsing

OpenStudy (nintendo_fangirl):

I believe in yew <3

OpenStudy (ace_santiago1):

:)

OpenStudy (ace_santiago1):

i think sub trction

OpenStudy (rivershinesdragon):

Yep! So, what are we subtracting?

OpenStudy (ace_santiago1):

im guessing 30-15 but thats hard

OpenStudy (rivershinesdragon):

Okay, so we have 30-15. Hmm... How do you do this?

OpenStudy (ace_santiago1):

h subact 15 balls minice 30 balls

OpenStudy (ace_santiago1):

i will try it on my papers

OpenStudy (rivershinesdragon):

Okay! Just tell me what you get.

OpenStudy (ace_santiago1):

is it B?

OpenStudy (rivershinesdragon):

Yep!

OpenStudy (ace_santiago1):

thanks alot!

OpenStudy (rivershinesdragon):

No problem!

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