RS Aggarwal Vikash Aggarwal Class 5 Activity Book Composite Mathematics Activity Sheet 26 Solution
Activity Sheet – 26
Fill in the blanks:
(1) When two or more numbers are multiplied together, then each number is a _______ of the product and the product is a ______ of each one of the numbers.
(2) When a number divides another number exactly, then the divisor is called a _____ of the dividend. And, dividend is called a _______ of the divisor.
(3) A number has at least one factor.
(4) 1 is a factor of every number.
(5)1 is a multiple of every number.
(6) The first three common multiples of 8 and 12 are 1, 2 and 4.
(7) The first common multiple of 16 and 18 is 144.
(8) The multiples of 15 lying between 100 and 170 are 105, 135, 150, 165.
(9) Every non-zero number is a factor of 1.
(10) Every number is multiple of 1.
(11) All even numbers are multiples of 2.
(12) Multiples of 10 have 1 in the ones place.
(13) The first three common multiples of 15 and 25 are 75, 150 and 225.
(14) The common factors 24 and 32 are 2, 4 and 8.
(15) A number divisible by 5 ends with 0 or 5.
(16) Each prime number has exactly 1 factors.
(17) A number which has more than two factors is called a composite numbers.
(18) The prime factors of 55 are 5 and 11.
(19) The only counting number which is neither prime nor composite is 1.
(20) The smallest prime number is 1.
(21) The only even prime number is 2.
(22) There are 25 prime numbers between 1 and 100.
(23) The largest 2-digit prime number is 97.
(24) The smallest 2 –digit prime number is 11.
(25) The least prime number less than 50 is 1.
(26) The greatest prime number less than 50 is 47.
(27) There are one prime numbers between 90 and 100.
(28) The smallest composite number is 4.
(29) Co-primes are numbers which have only _______ as their common factor.
(30) Prime numbers that differ by 2 are called twin primes.
(31) The L.C.M of two co-prime numbers is equal to their 2 and 3.
good
Good