7th Math Test 1

Question 1

Round off 4,638,482,196 to the nearest one billion

Answer 1

5,000,000,000

Question 2

Round off 4,638,482,196 to the nearest ten

Answer 2

4,638,482,200

Question 3

Round off 4,638,482,196 to the nearest one thousand

Answer 3

4,638,482,000

Question 4

Round off 4,638,482,196 to the nearest ten million

Answer 4

4,640,000,000

Question 5

Round off 4,638,482,196 to the nearest hundred million

Answer 5

4,600,000,000

Question 6

What is the Arabic value of MMDCXLII

Answer 6

2,642

Question 7

Choose the number that is divisible by 9: 574 or 783

Answer 7

783

Question 8

write the prime factors of 24

Answer 8

24 = 2 x 2 x 2 x 3

Question 9

write the prime factors of 16

Answer 9

16 = 2 x 2 x 2 x 2

Question 10

write the prime factors of 42

Answer 10

42 = 2 x 3 x 7

Question 11

Find the greatest common factor for 12 & 18

Answer 11

6

Question 12

Find the greatest common multiple of 5 & 6

Answer 12

30

Question 13

write the least common multiple of 4 & 6

Answer 13

12

Question 14

Write the greatest common factor of 4 & 6

Answer 14

2

Question 15

Which of these numbers are divisible by 4:

300, 128, 442, 1566, 2024, 182

Answer 15

300, 128, 2024

Question 16

Which of these numbers are divisible by 6:

672, 411, 3022, 1584, 657, 906

Answer 16

672, 1584, 906

Question 17

True or False: The number 1 is a prime number

Answer 17

False, it is neither prime nor composite

Question 18

True or False: The number 2 is a composite number

Answer 18

False, it is prime

Question 19

True or False: The order of the factors can be switched without changing the product.

Answer 19

True

Question 20

True or False: The sum of any number and 1 is that number

Answer 20

False. The PRODUCT of any number and 1 is that number

Question 21

True or False: The greatest common factor for 6 & 9 is 3

Answer 21

True

Question 22

True or False: The least common multiple for 3,4 & 5 is 20.

Answer 22

False.

Question 23

True or False: MCCCXXXVI = 3326

Answer 23

False

Question 24

The Ellis Animal Shelter had 52 dogs on Saturday. The shelter had twice as many cats as dogs. How many dogs & cats did the shelter have on Saturday altogether?

Answer 24

156 dogs & cats

Question 25

The population of Reidville is 478,967. Round off to the nearest ten thousand.

Answer 25

480,000

Question 26

Colin's grandparents sent him a check for one thousand dollars. Colin gave $150 to his church, and spent $396 on school clothes, books, and supplies. How much of the money does be have left?

Answer 26

$454