crct review: numbers & operations

CRCT Review:Numbers & Operations

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

Factors, Multiples, & Prime Factorization 100

Which choice shows ALL the factors of 45?

A. 5, 9

B. 1, 5, 9, 45

C. 1, 3, 5, 9, 15, 45

D. 1, 3, 4, 5, 9, 15, 45

Factors, Multiples, & Prime Factorization 100 Answer

C. 1, 3, 5, 9, 15, 45


Which number is a multiple of both 5 and 3?

A. 145

B. 260

C. 353

D. 510


D. 510

Explanation: use the divisibility rules –

3: sum of digits is divisible by 3

5: ends in 5 or 0


Which shows the prime factorization of 90?

A. 2 x 3 x 15B. 3² x 10C. 2 x 3² x 5D. 9 x 2 x 5

Factors, Multiples, & Prime Factorization

300 Answer

C. 2 x 3² x 5


What is the least common multiple of 9 & 15

A. 3B. 18C. 45D. 90


C. 45


What is the greatest common factor of 24 and 40?

A. 4 B. 8C. 12 D. 24


B. 8

Adding Fractions 100

A) B)

C) D)

1 3

6 4

4

107

12

11

12

11

12

Adding Fractions 100 Answer

C) 11

12


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) 1

3

2

3

3

4

7

8


D)7

8


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)

73

8

34

5

107

13

197

20

18

219

840


D. 19

840


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) 7

11

3

131

1523

30


D) 23

30


A) B) C) D)

1 2 33

2 3 4

63

9

15

411

412

54

6

Adding Fractions 500Answer

C) 114

12

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

15

8

71

8

13

4

33

8

34

4

Subtracting Fractions 100 Answer

A)

13

4


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)

33

8

15

2

12

2

32

41

28

78

8


B)1

28


Manuel practiced the violin for hours last

week. Roger practiced cello for hours. How

Much longer did Manuel practice?

A) B) C) D)

16

4

14

2

11

23

14

12

4

32

4


B) 31

4


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)

114

2

39

4

33

4

13

21

44

34

4


D) 34

4


A) B) C) D)

5 13 - 2

9 2

11

18

31

184

19

41

7

Subtracting Fractions 500Answer

A)

11

18

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)

32

4

1

3

11

12

51

7

5

12

52

12

Multiplying & Dividing Fractions 100 Answer

A) 11

12


1 23

5 15

A) B) C) D) 2432

75

2

5

122

2


D) 24


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) 2705

58


C) 160


A) B) C) D)

2 3

5 8

3

20

3

10

5

13

11

15


A) 3

20


A) B) C) 2 D) 3

2 2

3 9

1

34

9


D) 3

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

Misc. Answer 100

B) 18

Misc. 200For a concert, 80 singers will stand on risers. Thedirector wants to divide the singers so that there areequal numbers of singers standing on each riser. Which is NOT a possible way to divide the 80 singers Among the risers?

A) 4 risers with 20 singers eachB) 5 risers with 16 singers eachC) 6 risers with 12 singers each

D) 8 risers with 10 singers each

Misc. Answer 200

C) 6 risers with 12 singers each

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?

A) $6.85 B) $5.15

C) $4.85 D) $4.25

Misc. Answer 300

B) $5.15

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)

9

25

9

20

1

2

36

37

Misc. Answer 400

A)9

25

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

Misc. Answer 500

C) 270

Fractions, Decimals, & Percents 100

Which number is equivalent to 0.378?

A) B)

C) D)

437

539

350

19

100

189

500

Fractions, Decimals, & Percents Answer 100

D) 189

500

437

539

350

19

100

189

500


In which set are the numbers equivalent?

A) B)

C) D)

5 30.3, ,

15 10

2 20, 0.25,

5 50

70.70, , 0.7

10

30 3, 0.003,

100 100


C)7

0.70, , 0.710

5 30.3, ,

15 10

2 20, 0.25,

5 50

30 3, 0.003,

100 100

70.70, , 0.7

10


Of the students in Mr. Hubbert’s sixth-grade class, 75% are in the chorus. What fraction of the class is in the chorus?

A) B) C) D)1

752

3

5

7

3

4


D) 3

4


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?

A) $5.10 B) $51

C) $9 D) $90


C) $9


Which fraction equals 45%?

A) B) C) D)4

59

20

9

2545

50


B) 9

20

crct review: numbers & operations

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