All the solutions provided in McGraw Hill My Math Grade 4 Answer Key PDF Chapter 10 Lesson 2 Tenths will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 4 Answer Key Chapter 10 Lesson 2 Tenths
McGraw Hill My Math Grade 4 Chapter 10 Lesson 2 My Homework Answer Key
Practice
Model and write each decimal.
Question 1.
two out of ten
Answer: 0.2
The blue color in the above figure indicates 2 out of ten, which means two tenths.
If you divide 2 by ten you get four tenths as a decimal which is 0.2.
Question 2.
four out of ten
Answer: 0.4
The yellow color in the above figure indicates four out of ten, which means four tenths.
If you divide 4 by ten you get four tenths as a decimal which is 0.4.
Use words to describe each decimal.
Question 3.
0.3
Answer: Three tenths
The first digit to the right of the decimal point indicates the number of tenths.
Question 4.
0.8
Answer: Eight tenths
The first digit to the right of the decimal point indicates the number of tenths.
Write each of the following as a decimal. Then graph each point on the same number line.
Question 5.
one out of ten equal parts
Answer: 0.1
one out of ten equal parts is one tenths, which is 0.1 in decimal.
0.1 is indicated using pink point in the above number line.
Question 6.
seven out of ten equal parts
Answer: 0.7
seven out of ten equal parts is seven tenths, which is 0.7 in decimal.
0.7 is indicated using pink point in the above number line.
Problem Solving
Question 7.
Traci is playing a game at the circus. She has ten chances to throw a dart at a balloon. She hits the balloon 8 out of ten times. Write a decimal to show how many times Traci hit the balloons.
Answer: 0.8
Traci hits 8 balloons out of 10. So, when you divide 8 by 10, it is 0.8 in decimal.
Question 8.
Jackie took a science quiz. She only answered one out of ten problems incorrectly. Write a decimal to show the part of the quiz that Jackie answered correctly.
Answer: 0.9
Jackie answered one out of ten problems incorrectly, so 9 she answered correctly.
when you divide 9 by 10, it is 0.9 in decimal.
Question 9.
Mathematical PRACTICE Model Math Carter’s mom bought ten fruits at the grocery store. Seven of the fruits are bananas. Write a decimal to show the part of the fruits that are bananas.
Answer: 0.7
Seven out of ten fruits are bananas.
when you divide 7 by 10, it is 0.7 in decimal.
Question 10.
A parking lot has ten parking spaces. There are five cars parked in the parking lot. Write a decimal to show the part of the parking lot that has empty parking spaces.
Answer: 0.5
There are five cars parked in the ten parking lot spaces. So, the remaining empty spaces are five, which is 0.5 in decimal.
Test Practice
Question 11.
Which decimal represents the part of the model that is shaded?
(A) 0.04
(B) 0.1
(C) 0.4
(D) 4.0
Answer: C (0.4)
There are 4 green parts out of 10 parts.
when you divide 4 by 10, it is 0.4 in decimal.