McGraw Hill My Math Grade 3 Chapter 1 Review Answer Key

All the solutions provided in McGraw Hill My Math Grade 3 Answer Key PDF Chapter 1 Review will give you a clear idea of the concepts.

McGraw-Hill My Math Grade 3 Chapter 1 Review Answer Key

Vocabulary Check

Read each clue. Fill in the matching section of the crossword puzzle to answer each clue. Use the words in the word bank.
digit expanded form place value
round standard form word form

Across
1. A form which shows the sum of the value of the digits.
2. The usual way of writing numbers that shows only its digits.

Down
3. The value given to a digit by its place in a number.
4. The form of a number that uses written words.
5. Any symbol used to write whole numbers.
6. To find the nearest value of a number based on a given place value.

Answer:

Concept Check

Write the underlined digit’s place and value.

Question 7.
945 ______
Answer:
The underlined digit is 9.
The place value of 9 is hundred’s.
The value of 9 is 900.

Question 8.
4,731 _____
Answer:
The underlined digit is 3.
The place value of digit is tens.
The value of 3 is 30.

Question 9.
5,409 ______
Answer:
The underlined digit is 5.
The place value of digit is thousands.
The value of 5 is 5000.

Write each number in standard form.

Question 10.
300 + 40 + 7 ____
Answer:
The standard form of 300 + 40 + 7 is 347.

Question 11.
two thousand, six hundred twenty-two ______
Answer:
The of two thousand, six hundred twenty-two is 2622.

Write 3,651 in expanded form and word form.

Question 12.
Expanded Form: ____ + ___ + ___ + ____
Answer:
The expended form of 3,651 is 3000 + 600 + 50 + 1.

Question 13.
Word Form: ______________
Answer:
The word form of 3,651 is three thousand six hundred and fifty-one.

Compare. Use >, <, or =.

Question 14.
268 298
Answer:
268 < 298
268 is less than 298.

Question 15.
3,499 3,499
Answer:
3,499 = 3,499.
3,499 is equal to 3,499.

Question 16.
2,675 2,567
Answer:
2,675 > 2,567
2,675 greater than 2,567.

Round to the nearest ten.

Question 17.

______________
Answer:
Given that the number is 484.
484 rounded to the nearest ten is 480.
Here the ones place value is less than 5. So, replace the 4 with 0.

Question 18.

__________
Answer:
Given that the number is 259.
259 rounded to the nearest ten is 260.
Here the ones place value is greater than 5. So, replace the 9 with 0 and add 1 to the tens place.

Question 19.

___________
Answer:
Given that the number is 712.
712 rounded to the nearest ten is 710.
Here the ones place value is less than 5. So, replace the 2 with 0.

Round to the nearest ten and hundred.

Question 20.

ten ______
hundred _____
Answer:
Given that the number is 5,333.
5,333 rounded to the nearest ten is 5,330.
Here the ones place is less than 5. So, replace the ones place with 0.
5,333 rounded to the nearest hundred is 5,300.
Here the tens place is less than 50. So, replace the tens place and ones place by 0.

Question 21.

ten ______
hundred _____
Answer:
Given that,
The number is 2,787.
2,787 rounded to the nearest ten is 2790.
Here the ones place is greater than 5. So, replace the 7 with 0 and add 1 to the tens place digit.
2,787 rounded to the nearest hundred is 2,700.
Here the tens place is greater than the 50. So, replace the tens place and ones place with 0.

Problem Solving

Question 22.
Lindsey uses the digits 3, 8, 0, and 1. She uses each digit only once. Find the greatest whole number she can make.
Answer:
Given that,
Lindsey uses the digits are 3, 8, 0, 1.
The greatest whole number is 8,310.

Question 23.
Alicia wrote 5,004 in word form. Find and correct her mistake.

Answer:
Alicia wrote the 5,004 in word form is wrong.
The correct word form is five thousand and four.

Question 24.
Keith’s family bought a computer for $1,200. Margareta’s family bought a computer for $1,002. Which computer cost less? Explain.
Answer:
Given that,
Keith’s family bought a computer for $1,200.
Margareta’s family bought a computer for $1,002.
Here $1,200 greater than $1,002
Therefore Margareta’s family computer is less cost.

Test Practice

Question 25.
The Knights track team scored 117 points at last week’s meet. This week, they scored 10 more points than last week. About how many points did The Knights team score this week? Round to the nearest ten.
A. 120
B. 127
C. 130
D. 137
Answer:
Given that,
The Knights track team scored 117 points at last week’s meet.
This week, they scored 10 more points than last week.
Therefore, the Knights team score this week is 117 + 10 = 127.
127 rounded to the nearest ten is 130.
Option C is the correct answer.

Reflect

Use what you learned about place value to complete the graphic organizer.

Now reflect on the ESSENTIAL QUESTION? Write your answer below.