Form 1 Mathematics Chapter 2 Factors & Multiples

1.     Hong Kean baked 36 oatmeal cookies and 90 chocolate chip cookies to package in plastic containers for his friends at school. He wants to divide the cookies into identical containers so that each container has the same number of each kind of cookies. If he wants each container to have the greatest number of cookies possible, how many plastic container does he need? State the number of oatmeal cookies and chocolate chip cookies in each of the container. (CL mid-term 2019)

2.     June goes walking every 8 days and swimming every 6 days. He does both types of exercise today. After how many days will he do both walking and swimming on the same day again? (CL 1^st term 2020)

3. 3. List the first three common multiples of 2, 6 and 9. (CL 1^st term 2020)

4.     Determine the lowest common multiple (LCM) of 42, 54 and 84 with the method of prime factorisation. (CL mid-term 2019)

5.     210 packets of rice, 315 packets of sugar and 525 bottles of oil are distributed evenly to the poor families in a district. What is the largest possible number of families in the district? (CL end-term 2018)

6.     i) Determine whether 97 is a prime number. (CL mid-term 2016)

ii) Express 438 as a product of its prime factors. (CL mid-term 2016)

7.     i) The LCM of 4, 6 and 9 is x – 10. Find the value of x. (CL end-term 2016)

ii) Given that 5 is a factor of Q and Q is a factor of 75. State all the possible values of Q. (CL end-term 2016)

8.     i) Find the HCF of 135, 165 and 75 by using the repeated division method. (CL end-term 2016)