Points Getter

A

200

14 is a factor of which number ?

A. 12

B. 28

C. 40

D. 54

Ans : B ( Only 28 is a multiple of 14 / divisible by                 14.)

300

Find the numbers which are smaller than 50 and both are multiples of 6 and 8.

Ans : 24 & 48

B

400

72, 78, 84, 90 and 96 are all multiples of which number?

A. 4

B. 6

C. 8

D. 10

Ans : B ( all multiples are divisible by 6 )

500

Mr. Trimble is putting out 36 chocolate chip cookies for the students in his art club.

If he arranges the cookies in 3 rows, there will be  __?__ cookies in each row.

If he arranges the cookies in __?__ rows, there will be 4 cookies in each row.

Ans:

If he arranges the cookies in 3 rows, there will be 12 cookies in each row.

If he arranges the cookies in 9 rows, there will be  4 cookies in each row.

C

200

52 is a multiple of which number ?

A. 3

B. 7

C. 13

D. 18

Ans : C ( only 13 is a factor of 52 )

      

300

Find the number that is within 50. It is also a multiple of 4 and 7. What is it?

Ans:

Multiples of 4 within 50 = 4, 8, 12, 16, 20, 24,                                              28, 32, 36, 40

Multiples of 7 within 50 = 7, 14, 21, 28, 35, 42, 49

The number should be 28.

D

100

We know that 9 x 6 = 54.

So, which of the following statements are also true?

A. 9 is a factor of 6.

B. 54 is a multiple of 6.

C. 9 is a factor of 54.

D. 9 is a multiple of 6.

Ans : B, C

500

“Last year, my sister’s age was a factor of 36. This year, her age is a factor of 40.” How old could she be this year?

Factors of 36 – 1, 2, 3, 4, 6, 9, 12, 18, 36 

Factors of 40 – 1, 2, 4, 5, 8, 10, 20, 40

My sister could be 4, 5 and 10 years old.

E

100

Which method best shows that 45 is a multiple of 15?

A. 15 x  3  = 45

B. 45 ÷ 3  = 15

C.  9 x 5  = 45

D. 45 ÷ 5 = 9

Ans : A

400

234 is a multiple of 39. What are the multiples before and after 234 ?

Ans :

The previous multiple = 234 - 39 = 195

The later multiple       = 234 + 39 =273