16 take away 8 is what?

据说是4岁小盆友打911求助数学题的电话录音。

Dialogue:

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Operator: 911 emergencies.
Boy: Yeah I need some help.
Operator: What’s the matter?
Boy: With my math.
Operator: With your mouth?
Boy: No with my math. I have to do it. Will you help me?
Operator: Sure. Where do you live?
Boy: No with my math.
Operator: Yeah I know. Where do you live though?
Boy: No, I want you to talk to me on the phone.
Operator: No I can’t do that. I can send someone else to help you.
Boy: Okay.
Operator: What kind of math do you have that you need help with?
Boy: I have take aways.
Operator: Oh you have to do the take aways.
Boy: Yeah.
Operator: Alright, what’s the problem?
Boy: Um, you have to help me with my math.
Operator: Okay. Tell me what the math is.
Boy: Okay. 16 take away 8 is what?
Operator: You tell me. How much do you think it is?
Boy: I don’t know, 1.
Operator: No. How old are you?
Boy: I’m only 4.
Operator: 4!
Boy: Yeah.
Operator: What’s another problem, that was a tough one. （ha-ha）
Boy: Um, oh here’s one. 5 take away 5.
Operator: 5 take away 5 and how much do you think that is?
Boy: 5.
Woman: Johnny what do you think you’re doing?!
Boy: The policeman is helping me with my math.
Woman: What did I tell you about going on the phone?
Operator: It’s the mother…
Boy: You said if I need help to call somebody.
Woman: I didn’t mean the police.....