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HCF and LCM Worksheet-5

HCF and LCM Worksheet-5

 

  1. What is the L.C.M. of 14, 18, 24 and 32?

(a) 1320             (b) 2420            (c) 2020             (d) 2016

 

  1. Find the L.C.M. of 15 and 4.

(a) 20                 (b) 60                 (c) 40                  (d) 120

 

  1. Which number will Jenna get as the L.C.M. of 72, 96 and 160?

(a) 1420             (b) 1460             (c) 1600             (d) 1440

 

  1. The L.C.M. of two coprime numbers is equal to the ____.

(a) Quotient of the numbers

(b) Product of the numbers

(c) Sum of the numbers

(d) One of the number

 

  1. The L.C.M. of given multiple numbers is _____.

(a) Greater than or equal to the largest numbers

(b) Smaller than the numbers

(c) Always equal to the numbers

(d) Always greater than the numbers

 

  1. Julia is getting remainder 5 each time she is dividing a smallest number by 16, 24 and 48. What is that smallest number?

(a) 240               (b) 148               (c) 53                  (d) 101

 

  1. Ben and Ron went on a running race on a circular track. Ben touched the starting point every 25 seconds and Ron touched the starting point every 35 seconds. If they start together, when will they next touch the starting point together?

(a) 115 seconds                              (b) 175 seconds

(c) 125 seconds                             (d) Never

 

  1. 40 is the Least Common Multiple of ______.

(a) 40 and 50                                (b) 12 and 20

(c) 8 and 20                                   (d) 30 and 60

 

  1. 1008 is the lowest 4-digit number, which is exactly divisible by ____.

(a) 14, 44 and 62                          (b) 14, 42 and 56

(c) 16, 32 and 48                          (d) 18, 36 and 74

 

  1. The bells at three Churches toll at intervals of 15, 20 and 25 seconds. If the bells begin to toll together, after how much time will they toll together again?

(a) 180 seconds                             (b) Never

(c) 120 seconds                             (d) 300 seconds

 

Answer Key:

  1. (d)
  2. (b)
  3. (d)
  4. (b)
  5. (a)
  6. (c)
  7. (b)
  8. (c)
  9. (b)
  10. (d)