Lesson 22 Homework 4.3 Answer Key

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For those who have done the Eureka Math Lesson 22 Homework 4.3, you may want to check if you did a good job. Well, in this article we are going to inform you of the answer key of the Eureka Math Lesson 22 Homework 4.3. But, for those who have not done your homework, you are able to solve the Homework. Try to answer all the questions first, then you will be able to check the answer here.

The Answer Key for Lesson 27 Homework 5.2

For the first question, you are going to ask to record the factors of the given numbers as multiplication sentences and as a list in order from least to greatest. Then, you have to classify each as prime (P) or composite (C).

The answer for the first question:

Multiple Sentences Factors P or C
A 8

1 x 8 = 8   2 x 4 = 8

The factors of 8 are: 1, 2, 4 and 8 Composite
B 10

1 x 10 = 10   2 x 5 = 10

The factors of 10 are: 1, 2, 5 and 10 Composite
C 11

1 x 11 = 11

The factors of 11 are: 1 and 11 Prime
D 14

1 x 14 = 14  2 x 7 = 14

The factors of 14 are: 1, 2, 7 and 14 Composite
E 17

1 x 17 = 17

The factors of 17 are: 1 and 17 Prime
F 20

1 x 20 = 20  2 x 10 = 20  4 x 5 = 20

The factors of 20 are: 1, 2, 4, 5, 10 and 20 Composite
G 22

1 x 22 = 22 2 x 11 = 22

The factors of 22 are: 1, 2, 11 and 22 Composite
H 23

1 x 23 = 23

The factors of 23 are: 1 and 23 Prime
I 25

1 x 25 = 25  5 x 5 = 25

The factors of 25 are: 1, 5 and 25 Composite
J 26

1 x 26 = 26  2 x 13 = 26

The factors of 26 are: 1, 2, 13 and 26 Composite
K 27

1 x 27 = 27  3 x 9 = 27

The factors of 27 are: 1, 3, 9 and 27 Composite
L 28

1 x 28 = 28  2 x 14 = 28  4 x 7 = 28

The factors of 28 are: 1, 2, 4, 7, 14 and 28 Composite

For the second question, you are going to ask to find all factors for the following numbers and also classify them as prime or composite. Please explain your classification of each as prime or composite.

The answer for the second question:

Factor pairs for 19
1 19

This classify as Prime

This has only two factors

Factor pairs for 21
1 21
3 7

This classify as Composite

This has more than two factors

Factor pairs for 24
1 24
2 12
3 8
4 6

This classify as Composite

This has more than two factors

This is for the third question: Bryan says that only even numbers are composite.

a. Please list all of the odd numbers less than 20 in numerical order

b. Try to use your list to show that Bryan’s claim is false.

The answer for the third question:

a. 1, 3, 5, 7, 9, 11, 13, 15, 17 and 19

b. 9 and 15 are odd. But they are also composite

This is for the fourth question: Julie has 27 grapes to divide evenly among three friends. She thinks there will be no leftovers. Try to use what you know about factor pairs to explain if Julie is correct.

The answer for the fourth question:

Since 3 x 9 = 27, we know there will be no leftovers.

About Eureka Math

Some of you may not know about Eureka Math. Well, here we are going to explain about Eureka Math. Need to know that Eureka Math is a math curriculum. As far now, there are many teachers and schools that have implemented Eureka Math. Eureka Math is recognized for its research-based, hard approach to teaching math conceptually.

The curriculum of Eureka Math will be able to help the students for developing an understanding of mathematics. Based on the research, Eureka math is one of the best math curriculums. Well, let us discuss the components of the Eureka math curriculum so that you are going to know what’s included in the Eureka math curriculum and how you are able to use it properly.

You have to know that the Eureka math curriculum is divided into several modules which covers a different math topic. Of course, it is vital to note that the progression of the topics is research-based. Thus, Eureka Math is going to work best when the modules are completed in order. Each module of the Eureka Math will come with a teacher manual and a student workbook and fluency practice. If you are using the online PDF version, those are each discovered in separate files for each module.

Eureka Math – Student Workbooks and Fluency

Below is an overview of the student resources included with each module:

  • Sprints
    Need to note that not every lesson has a sprint. For your information, sprints are part of the fluency practice section. Sprints will be able to assist to further deepen a conceptual understanding of the concepts.
  • Problem sets
    Each module is going to include a problem set with each lesson for independent practice. This is done as part of the concept development.
  • Exit Tickets
    Each module includes exit tickets too to be completed at the end of each lesson. The problems are similar to those on the problem set, however each exit ticket just has 1-3 questions on it. It is used as an assessment to measure the student’s understanding of the lesson.
  • Student Templates
    Also, a student template is included with a lesson for the students to utilize the concept development.

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