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## 3rd grade foundations (Eureka Math/EngageNY)

### Unit 4: Lesson 2

Topic B, C, & D: Foundations# Repeated addition: haircuts

CCSS.Math:

Sal solves word problems by adding the same number many times.

## Want to join the conversation?

- so is repeated addition like multiplication?(7 votes)
- Yes, since multiplication consists of repeatedly adding a number, therefore a multiplication allows you to abbreviate a sum, in order not to repeat the sum of the same numbers.
*I hope I have helped*...(1 vote)

- so 5+5+5+5+5 is the same as 5*5(8 votes)
- Yes it is. Though if you want to write it extremely short you could just say 5 squared or 5 with a superscript 2(1 vote)

- what is 100-98= what dis that equal to.(3 votes)
- if you don't know that then the answer is 2(4 votes)

- so B and C were correct on reapeated additon?(3 votes)
- Can you put a timestamp of when this happens in the video?(2 votes)

- How do you know when to add objects vertically or horizontally in repeated addition?(3 votes)
- What 144 x8845(3 votes)
- 1,273,680

One million, two hundred seventy-three thousand, six hundred eighty(2 votes)

- im in 5th grade and dont get it(2 votes)
- All you have to do is flip the numbers around and then you will get (11)(2 votes)
- im in 7 grade and don't get what to do math is hard and why do why need to do this in our live i my not need this or maybe i do i dont know(1 vote)
- repeated addition is multiplying, right?(0 votes)
- yes, take the number of times a number is added and multiple that number by that number. for example 5+5+5 would also be 5*3 because you are adding 5 three times.(5 votes)

## Video transcript

- [Voiceover] There are
four seasons each year. Rafael gets a haircut
two times each season. One at Arlo's barber shop, and
the other at Awesome Snips. Which choices represent the number of haircuts Rafael will get this year? And they've even made a little diagram for us right over here. So they tell us there's
four seasons in the year, Spring, Summer, Autumn, Winter. And that each season
Rafael gets two haircuts. He gets one at Arlo's
and one at Awesome Snips. So in Spring this is
the one that he gets at Arlo's, this is the one that
he gets at Awesome Snips. And Summer, this is the
one he gets at Arlos', this is the one he gets at Awesome Snips. Autumn this is the he gets at Arlo's, this is the one at Awesome Snips. And Winter, this is the one at Arlo's, this is the one at Awesome Snips. So they ask us, which choices represent the number of haircuts
Rafael will get this year? Well one way to this about it is: In Spring he will get two haircuts then in Summer he is going to
get another 2 haircuts. In Autumn he is going to
get another two haircuts. And then in Winter he is going
to get another two haircuts. So he is going to get two in Spring, plus two in Summer, plus two in Autumn, plus two in Winter. Which is going to be
equal to eight haircuts. So which of these represent eight? Well let's see, two plus
two, that's not eight. Four plus four plus four plus four, that's not eight, that's 16. Two plus two is four. Four plus four is eight, plus four is 12 plus four is 16, that's not eight. Four plus four, that is equal to eight. That is the number of haircuts Rafael is going to get this year. So we can check that one. Two plus two plus two plus two, that's exactly what we
wrote here, and it is eight. So that is equal to the number of haircuts he is going to get this year. And then two plus four, well that's not equal to eight, that's
six, so that's not right. So these are the two that represent the number of haircuts
Rafael will get this year.