Ross 4th Grade Unit 2 Review - Estimation & Number Theory

Question 1

What is the closest estimate of 541 + 670?

Accepted Answer

500 + 700

Question 2

What is 3,456 rounded to the nearest hundred?

Accepted Answer

3,500

Question 3

What is the sum of the first two multiples of 5?

Accepted Answer

15

Question 4

What are the common factors of 16 and 32?

Accepted Answer

1, 2, 4, 8, and 16

Question 5

What is a prime number between 20 and 25?

Accepted Answer

23

Question 6

What is the greatest common factor of 12 and 18?

Accepted Answer

6

Question 7

What is the third multiple of 9?

Accepted Answer

27

Question 8

What is 5,203 rounded to the nearest thousand?

Accepted Answer

5,000

Question 9

Find the sum of 8,230 and 3,678. Round the sum to the nearest hundred.

Accepted Answer

11,900

Question 10

Which of the following statements is correct?

Accepted Answer

10 is a common factor of 40 and 80

Question 11

Find the sum of 6,974 and 3,265. Round the sum to the nearest hundred.

Accepted Answer

10,200

Question 12

What is the smallest composite number between 15 and 25?

Accepted Answer

16

Question 13

What is the seventh multiple of 8?

Accepted Answer

56

Question 14

What is a prime number between 13 and 18?

Accepted Answer

17

Question 15

Find the difference of 8,944 and 5,612. Round the difference to the nearest thousand.

Accepted Answer

3,000

Question 16

What is the estimated sum of 345 +899

Accepted Answer

1200

Question 17

Which of the following statements is Correct?

Accepted Answer

5 is a common factor of 15 and 155

Question 18

What is the greatest common factor of 16 and 32?

Accepted Answer

16

Question 19

What is the estimated sum of 123 +379

Accepted Answer

500

Question 20

What is the greatest common factor of 20 and 36?

Accepted Answer

4

Question 21

What is a greatest common factor of 16 and 24

Accepted Answer

8

Question 22

What is 20 X 8?

Accepted Answer

160

Question 23

What is the eleventh multiple of 6?

Accepted Answer

66

Question 24

What are the common factors of 12 and 18?

Accepted Answer

1, 2, 3, and 6

Question 25

What are the common factors of 20 and 36?

Accepted Answer

1, 2, and 4

Question 26

What is the fifth multiple of 9?

Accepted Answer

45

Ross 4th Grade Unit 2 Review - Estimation & Number Theory

Questions 26

Ross 4th Grade Unit 2 Review - Estimation & Number Theory

Questions 26