For those who are currently using Eureka Math are looking for the answer key of the Lesson 7 Homework 5.1, here is for you. Please match the correct answers here to your answers and count how much you get right.

**Homework:**

1. 4 ones + tenths; 43 tenths; 430 hundredths

a. 430 hundredths = 4.3

b. 43 tenths = 4.3

c. 4 ones = 4

2. 22 tens + 5 ones + 2 tenths + 8 hundredths + 6 thousandths; 225 ones + 2 tenths + 8 hundredths + 6 ones; 2,252 tenths + 8 hundredths + 6 thousandths

a. 22,529 hundredths = 225.29

b. 225 ones = 225

c. 23 tens = 230

3. 8 ones + 9 tenths + 8 hundredths + 4 thousandths; 89 tenths + 8 hundredths + 4 thousandths; 898 hundredths + 4 thousandths

a. 898 hundredths = 8.98

b. 90 tenths = 9.0

c. 9 ones = 9

d. 1 ten = 10

4.

a. 18.39 m

b. 1,838.6 cm

5. Explanations will vary

If you have done all the questions from Eureka Math Lesson 7 but have not checked the answer yet, here are the right answers of all questions included in this lesson. Do not forget to mark which one is right and which one is not and count the how many answers you get right so that you can improve your math in the next lesson.

**Sprint**

**Side A:**

- 5
- 0.5
- 0.005
- 15
- 1.5
- 2.5
- 3.5
- 7.5
- 1.5
- 0.15
- 0.25
- 0.35
- 0.75
- 0.15
- 0.015
- 0.025
- 0.035
- 0.075
- 6.5
- 16.5
- 38.5
- 0.45
- 8.55
- 2.85
- 0.035
- 0.135
- 0.375
- 85
- 95
- 8.5
- 9.5
- 0.85
- 0.95
- 0.085
- 0.095
- 26.5
- 7.85
- 1.265
- 29.5
- 9.95
- 7.95
- 1.595
- 1.795
- 3.995

**Side B:**

- 15
- 1.5
- 0.15
- 0.015
- 5
- 0.5
- 1.5
- 2.5
- 6.5
- 1.5
- 0.15
- 0.25
- 0.35
- 0.65
- 0.15
- 0.015
- 0.025
- 0.035
- 0.065
- 7.5
- 17.5
- 47.5
- 0.75
- 4.75
- 2.35
- 0.025
- 0.125
- 0.475
- 85
- 95
- 8.5
- 9.5
- 0.85
- 0.95
- 0.085
- 0.095
- 36.5
- 6.85
- 1.465
- 39.5
- 9.95
- 6.95
- 1.295
- 6.995

**Problem Set:**

1. Ones + 1 tenth; 31 tenth; 310 hundredths

a. 310 hundredths = 3.1

b. 31 tenth = 3.1

c. 0 tens

2. 11 tens + ones + 3 tenths + 7 hundredths + 6 thousandths; 115 ones + 3 tenths + 7 hundredths + 6 thousandths; 1,153 tenths + 7 hundredths + 6 thousandths; 11,537 hundredths + 6 thousandths

a. 11,538 hundredths = 115.38

b. 115 ones = 115

c. 12 tens = 120

3. 9 tenths + 9 hundredths + 4 thousandths; 99 hundredths + 4 thousandths; 944 thousandths

a. 99 hundredths = 0.99

b. 10 tenths = 1.0

c. 1 one = 1

d. 0 tens = 0

4. 2.14 m

5. Explanations will vary

**Exit Ticket:**

a. 855 hundredths = 8.55

b. 1 ten = 10

So, how many questions do you get right? Count everything and evaluate what is lacking if there is any. As a saying, practice makes perfect, so please do practice a lot and do not get tired practicing the same thing all over again. While you may want to focus on the aspect that you are lacking, please do not forget about the one that you are currently good at as well. The one thing that you are good at might become your lacking point later if you do not practice and forget something.

The objective of the lesson 7 is round a given decimal to any place using place value understanding and the vertical number line.

Eureka Math is quite different compared to your math classes in school or the way you learned math. It does not mean one is better that the other, but the key is the expectations expected by the students. Nowadays, there are a lot of challenges and problems that have to be solved. The students will be the ones that will have to solve these issues and most careers will need strong problem-solving skills. In order to address the new challenge, the teachers or the instructors have to prepare the students to be the ones who think and the ones who solve the problem and really understand math.

Here is the difference. For years, math has been taught as math facts and formulas. Students were taught just to memorize math facts and a certain method of calculating or solving a math problem. The problem arises in this kind of instruction when many of us never really understood that math we were doing. Everyone just memorized and solved the problem like the teacher told us to. In this era, the expectations of the students are much greater. The standards and assessments are requiring students to solve much more complex issues. To be able to solve all of them, they need to understand the math concepts and have some strategies for solving difficult issues. Memorizing facts and a strategy may not help in solving the complex problems that students may encounter on state assessments and even life.

To fulfill the expectation of the students, Eureka Math is created. The main purpose of it is to build math understanding from kindergarten to 12^{th} grade. The math that the students are doing may be not familiar and you may not really understand everything they are doing. Please believe that there is a good reason behind what the students are doing. Making some different kinds of strategies and deep understanding of numbers is how the students will become great in this subject problem solvers.