  Grade 6 - Natural-and-Whole-Numbers

Check True/False

 1) Between any two non consecutive whole numbers there is a whole number. True    False
 2) Every natural number is a whole number. True    False

Fill in the blanks

 3) 432 X 394 = 394 X
4)Find the Least Common Multiple (LCM) of following:
 LCM of 50, 200, 10 is . LCM of 28, 126, 28, 72 is . LCM of 42, 63, 35, 15 is .
 5) A rectangular courtyard with length 18 m 43 cm and breadth 12 m 73 cm is to be paved with square stones of the same size. The least number of such stones required are .
 6) The greatest number which divides 613, 182 and 407 leaving remainder 5, 6 and 7 respectively is .

Choose correct answer(s) from given choice

7)The lowest natural number which when divided by 10, 28, 8, 56 leaves the remainder of 5 in each case is
 a. 288 b. 284 c. 285 d. none of these
8)A lighthouse has two lights - one that flashes every 2 minutes, and another that flashes every
 1 1 2
minutes. Suppose the lights flash together at noon. What is the first time after 1 pm that they will flash together again?

 a. 1:03 b. 1:06 c. 1:05 d. 1:01
9)Select the best way to do the multiplication of these numbers
20 X 338 X 50 X 20
 a. ((338 X 50) X 20) X 338 b. ((20 X 50) X 20) X 338 c. (338 X 20) X 20 X 50 d. (338 X 20) X 50 X 20
10)The set of consecutive odd numbers starting from 1 till N (i.e. 1,3, 5, 7...N) has a sum of 400. What is the value of N?
 a. 35 b. 37 c. 41 d. 39