Get premium membership and access video lessons, revision papers with marking schemes, notes and live classes.

Processing. Please wait.

Grade 7 Online Lessons in Factors

Grade 7 Online Lessons in Factors
Topic: Numbers
Sub-Topic: Factors
1. Divisibility tests of 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11
2. Composite numbers
3. Greatest common divisor
4. Least common multiple
5. Real-life applications of GCD and LCM

Lessons (25)

1. Between 9, 10 and 11, which one can you use to divide the number 4 730 without a reminder?
2m 17s
2. A farmer usually divides the workers in his farms into groups of 9, 10 or 11. He always ensures that the groups have an equal number of workers. One day he had 2 394 workers in his farm. Into how many groups should he divide the workers equally?
2m 58s
3. Express the following numbers as products of their prime factors. a) 560 b) 4 525
3m 1s
4. An employee who works in a tea factory earns sh 7 800 per week. Express the number 7 800 as a product of its prime factors.
2m 14s
5. To celebrate the World Blood Donor Day, residents of a certain county donated 9 560 pints of blood. Express the number 9 560 as a product of its prime factors.
2m 47s
6. Work out the greatest common divisor of the following pair of numbers. 24 and 28
2m 3s
7. What is the greatest number that can divide 54, 36 or 81 without a remainder?
2m 59s
8. What is the greatest common divisor of 336 and 504?
3m 35s
9. What is the highest number of children than can share 120 mangoes or 90 apples without a remainder?
2m 55s
10. What is the highest number of people that can share 420 sheep or 560 goats equally?
3m 21s
11. What is the least common multiple of 12 and 15?
1m 48s
12. What is the least number that can be divided by 10, 20 and 25 without a remainder?
2m 31s
13. Work out the least common multiple of the following pair of numbers. 18 and 27
1m 42s
14. Work out the least number of mangoes that can be shared equally among 15 boys or 20 girls.
1m 53s
15. During Home Science practical, learners filled a tank with water using either a 10 litres or a 15 litres container. What is the least capacity of the tank that each container would fill without any water remaining in the container?
2m 43s
16. Mr Mwangemi teaches Mathematics in three classes. The classes have 36, 42 and 54 learners respectively. He wants the learners to be in groups of equal number of learners in all the three classes. What is the highest number of learners that each group can have?
3m 29s
17. Four athletes take 60 seconds, 72 seconds, 90 seconds and 96 seconds to complete one lap of a track. If all the four athletes start a race at the same time, how long will it take for them to be together again at the starting line?
5m 19s
18. In a certain school, learners are put into groups of 6, 7 and 8 to form discussion groups during Mathematics, English and Kiswahili contests, respectively. What is the least number of learners that should be in the school for the groups to be complete during each of the contests?
3m 11s
19. Four bags contain 36 kg, 39 kg, 42 kg and 45 kg of sugar respectively. The sugar is repacked in packets. Calculate the maximum possible mass of sugar that each packet should have if no sugar is left unpacked.
3m 11s
20. A trader wants to pack fruits in packets that carry two, three or four fruits each. Using divisibility test of 2, 3 and 4, determine which of the following number of fruits he can buy and pack without some fruits remaining unpacked? 56 894, 56 184, 56 352, 56 123
5m 47s
21. Karimi is a dairy farmer. She sells milk in either 2 litres or 4 litres bottles. One day, her cows produced 2 458 litres of milk. Which bottle should she use to ensure that all the milk fits into the bottles?
2m 36s
22. Between 5 and 6, which number should you use to divide 5 780 without a remainder?
1m 46s
23. A farmer donated 1 230 sheep to several children’s homes. Between 6 and 8 sheep, how many sheep did he donate to each home without any sheep remaining?
1m 36s
24. Color the box with numbers that are divisible by 5, 6 and 8.
5m 19s
25. For each number, put a tick if the number is divisible by 2, 3 or 4 and put cross if it is not divisible by 2, 3 or 4.
2m 48s

Grade 7 Online Lessons in Factors

Related Content