All the solutions provided in McGraw Hill My Math Grade 4 Answer Key PDF Chapter 10 Lesson 3 Hundredths will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 4 Answer Key Chapter 10 Lesson 3 Hundredths
McGraw Hill My Math Grade 4 Chapter 10 Lesson 3 My Homework Answer Key
Practice
Write a decimal for each part of a dollar shown.
Question 1.
Answer: 0.45
quarter equals 25 cents
nickel equals to 5 cents. There are total 4 nickels, which is 20 cents.
Total = 25 + 20 = 45 cents
If you divide 45 cents by 100 cents, then 0.45 is the decimal number.
Question 2.
Answer: 61
penny equals 1 cent
dime equals 10 cents. There are total 6 dimes, which is 60 cents.
Total = 1 + 60 = 61 cents
If you divide 61 cents by 100 cents, then 0.61 is the decimal number.
Problem Solving
Question 3.
Dexter bought an apple. He paid using the coins shown below.
Write a decimal to show the part of a dollar that he paid.
Answer: 0.44
quarter equals 25 cents
penny equals 1 cent. There are total 4 pennies, which is 4 cents.
dime equals 10 cents
nickel equals to 5 cents
Total = 25 + 4+ 10+ 5 = 44 cents
If you divide 44 cents by 100 cents, then 0.44 is the decimal number.
Question 4.
Daniel had a social studies quiz. He answered eighty-seven out of 100 exercises correctly. Write a decimal to show the part of the quiz that Daniel answered correctly.
Answer: 0.87
Daniel answered eighty-seven out of 100 exercises correctly, which is 0.87 in decimal.
Question 5.
Mathematical PRACTICE Model Math Claire has three nickels, two quarters, and one dime in her pocket Write a decimal to show the part of a dollar that Claire has in her pocket.
Answer: 0.75
3 nickels equals to 15 cents
2 quarters equals 50 cents
dime equals 10 cents
Total = 15 + 50 + 10 = 75 cents
If you divide 75 cents by 100 cents, then 0.75 is the decimal number.
Question 6.
Mathematical PRACTICE Be Precise Explain how you know which coins could be used to show 0.77 of a dollar.
Answer: 7 Dimes, 1 Nickel, 2 Pennies
1 dime equals 10 cents
1 nickel equals to 5 cents
1 penny equals 1 cent
Test Practice
Question 7.
Which decimal shows fifty-seven out of one hundred?
(A) 0.57
(B) 0.75
(C) 5.70
(D) 57.0
Answer: A (0.57)
57 parts are in pink color out of 100 parts
If you divide 57 by 100, 0.57 is the decimal.