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Transcript
```NIMS GROUP OF SCHOOLS,UAE
Chapter Name – Playing with Numbers
Date: --------
Time:
Name of Student:
Date of Submission:
PART-A
1. Which of the following is not a prime number.
[ 23 , 29 , 87 , 97 ]
2. Which is the smallest composite number
[2,4,1,3]
3. HCF of two consecutive even numbers is
[5,0,2,1]
4. Write all possible factors of
1) 65
2) 34
3) 90
5. Complete these pairs of factors of 54.
1x______
2x______
3x______
6x______
6. Make a table to check if the following numbers are divisible
by 2 , 3 and 6.
1)1556 2) 23082
PART -B
7. Write the smallest 5 digit number and express it as the
Product of its primes
8. Three pieces of wood measuring 35m, 49m,and 63m long
have to be divided in to planks of equal length. What is the
Subject / Grade / Work Sheet Number / Chapter Number / 2012-2013
Page 1
greatest possible length of each plank ?
9. Three persons step off together from a point . Their steps
measure 40cm, 42cm and 45cm respectively .At what distance
will they be together again?
PART -C
10. 576 is divisible by 24 . Show that it will also be divisible by all
the factors of 24.
11. Use divisibility tests to find which of the following numbers are
divisible by 11
1) 500005
2) 3883935
12. Write the current year and find its prime factors.
13. Find the least no: which leaves a remainder 7 when
divided by 20 , 50 and 75.
Rubrics
Criteria being evaluated
1.Identification of prime and
composite numbers
2.To find the prime factors and
to check the divisibility tests
3.To apply the concept of
L.C.M. and H.C.F.
Criteria being evaluated
complete
incomplete
complete
complete with
some
confusion
Subject / Grade / Work Sheet Number / Chapter Number / 2012-2013