CRCT Review: Numbers

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CRCT ReviewNumbers Operations
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Factors, Multiples, Prime Factorization Adding Fractions Subtracting Fractions Multiplying Dividing Fractions Fractions, Decimals, Percents Misc.
100 100 100 100 100 100
200 200 200 200 200 200
300 300 300 300 300 300
400 400 400 400 400 400
500 500 500 500 500 500
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Factors, Multiples, Prime Factorization 100

• Which choice shows ALL the factors of 45?
• 5, 9
• 1, 5, 9, 45
• 1, 3, 5, 9, 15, 45
• 1, 3, 4, 5, 9, 15, 45

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Factors, Multiples, Prime Factorization 100
Answer

• C. 1, 3, 5, 9, 15, 45

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Factors, Multiples, Prime Factorization 200

• Which number is a multiple of both 5 and 3?
• 145
• 260
• 353
• 510

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Factors, Multiples, Prime Factorization 200
Answer

• D. 510
• Explanation use the divisibility rules
• 3 sum of digits is divisible by 3
• 5 ends in 5 or 0

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Factors, Multiples, Prime Factorization 300

• Which shows the prime factorization of 90?
• 2 x 3 x 15
• 3² x 10
• 2 x 3² x 5
• 9 x 2 x 5

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Factors, Multiples, Prime Factorization 300
Answer

C. 2 x 3² x 5
9
Factors, Multiples, Prime Factorization 400
What is the least common multiple of 9 15 A.
3 B. 18 C. 45 D. 90
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Factors, Multiples, Prime Factorization 400
Answer

• C. 45

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Factors, Multiples, Prime Factorization 500
What is the greatest common factor of 24 and
40? A. 4 B. 8 C. 12 D. 24
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Factors, Multiples, Prime Factorization 500
Answer

• B. 8

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Adding Fractions 100

• B)
• C) D)

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Adding Fractions 100 Answer

• C)

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Adding Fractions 200

• Art is reading a book for school. He read
• ¾ of the book last weekend and 1/8 this
• morning. What fraction of the book has he
• read so far?
• A) B) C) D)

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Adding Fractions 200 Answer

• D)

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Adding Fractions 300

• Micah needs yds of fabric for one project
• and yds of fabric for another. How many
• yds of fabric does she need in all?
• A) B) C) D)

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Adding Fractions 300 Answer

• D.

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Adding Fractions 400

• Vinnie is painting a barn. He did 2/3 of the
• Job last weekend and 1/10 this morning.
• What fraction of the barn has Vinnie painted?
• A) B) C) D)

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Adding Fractions 400 Answer

• D)

21
Adding Fractions 500

• A) B) C) D)

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Adding Fractions 500Answer

• C)

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Subtracting Fractions 100

• A sewing pattern shows that yds of fabric
  are needed to
• make a bathrobe. A matching nightshirt needs only
  yds. How
• much more fabric is needed for the bathrobe than
  for the
• nightshirt?
• A) B) C) D) 7

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Subtracting Fractions 100 Answer

• A)

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Subtracting Fractions 200

• Tracy has pints of orange juice. She needs
• pints to make a punch. How much more
• Orange juice does she need?
• A) B) C) D)

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Subtracting Fractions 200 Answer

• B)

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Subtracting Fractions 300

• Manuel practiced the violin for hours
  last
• week. Roger practiced cello for hours.
  How
• Much longer did Manuel practice?
• A) B) C) D)

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Subtracting Fractions 300 Answer

• B)

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Subtracting Fractions 400

• It took George hrs to plant a vegetable
  garden.
• Dick planted his garden in just hrs. How
  much
• Longer did it take George to plant his garden?
• A) B) C) D)

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Subtracting Fractions 400 Answer

• D)

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Subtracting Fractions 500

• A) B) C) D)

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Subtracting Fractions 500Answer

• A)

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Multiplying Dividing Fractions 100

• Arnold bought yds of string. He used
• Of it for a craft project. How much string did he
  use?
• A) B) C) D)

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Multiplying Dividing Fractions 100 Answer

• A)

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Multiplying Dividing Fractions 200
A) B) C)
D) 24
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Multiplying Dividing Fractions 200 Answer

• D) 24

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Multiplying Dividing Fractions 300

• Small metal parts each measure 3/16 of an
• inch. How many of these parts can be cut
• from a strip of metal that is 30 inches long?
• A) B) 90 C) 160 D) 270

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Multiplying Dividing Fractions 300 Answer

• C) 160

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Multiplying Dividing Fractions 400

• A) B) C) D)

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Multiplying Dividing Fractions 400 Answer

• A)

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Multiplying Dividing Fractions 500

• A) B) C) 2 D) 3

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Multiplying Dividing Fractions 500 Answer

• D) 3

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Misc. 100

• Robert has a stamp collection. He can divide
• all the stamps in his collection into equal
• groups of 6 or equal groups of 9. What is the
• LEAST possible number of stamps that
• could be in his collection?
• A) 9 B) 18 C) 36 D) 54

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Misc. Answer 100

• B) 18

45
Misc. 200

• For a concert, 80 singers will stand on risers.
  The
• director wants to divide the singers so that
  there are
• equal numbers of singers standing on each riser.
• Which is NOT a possible way to divide the 80
  singers
• Among the risers?
• 4 risers with 20 singers each
• B) 5 risers with 16 singers each
• C) 6 risers with 12 singers each
• D) 8 risers with 10 singers each

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Misc. Answer 200

• C) 6 risers with 12 singers each

47
Misc. 300

• Sal bought these items at the school store.
• Binder 3.50
• Notebook 1.25
• Pencil 0.10
• How much change did he receive from 10.00?
• 6.85 B) 5.15
• C) 4.85 D) 4.25

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Misc. Answer 300

• B) 5.15

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Misc. 400

• Shelly found that 36 of the students she
  surveyed said chocolate was their favorite ice
  cream flavor. What fraction is equivalent to 36?
• A) B) C) D)

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Misc. Answer 400

• A)

51
Misc. 500

• A total of 450 people attended the school play
  performance. If 60 of those attending were
  parents, how many parents attended the
  performance?
• A) 27 B) 39 C) 270 D) 390

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Misc. Answer 500

• C) 270

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Fractions, Decimals, Percents 100

• Which number is equivalent to 0.378?
• B)
• C) D)

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Fractions, Decimals, Percents Answer 100

• D)

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Fractions, Decimals, Percents 200

• In which set are the numbers equivalent?
• B)
• C) D)

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Fractions, Decimals, Percents Answer 200

• C)

57
Fractions, Decimals, Percents 300

• Of the students in Mr. Hubberts sixth-grade
  class, 75 are in the chorus. What fraction of
  the class is in the chorus?
• A) B) C) D)

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Fractions, Decimals, Percents Answer 300

• D)

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Fractions, Decimals, Percents 400

• Lucy saved 15 of the price of a radio when she
  bought it on sale. The regular price was 60. How
  much did Lucy save?
• 5.10 B) 51
• C) 9 D) 90

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Fractions, Decimals, Percents Answer 400

• C) 9

61
Fractions, Decimals, Percents 500

• Which fraction equals 45?
• A) B) C) D)

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Fractions, Decimals, Percents Answer 500

• B)