Day Two Try these. Find the product of 34


1


and 26


.


Answer: 2


Marks:


/2


(a) Work out which is greater: the sum of the first five prime numbers starting at 3 or the sum of the first five composite numbers starting at 4. (b) What is the difference between them?


Answers: (a) 3


(b)


Marks:


/2


(a) Work out which is greater: the sum of the first five multiples of 4 or the sum of the first six multiples of 3. (b) What is the difference between them?


Answers: (a) 4


(b)


Marks:


/2


The school bells in Greensdale Senior School, Greensdale Junior School and Greensdale Secondary School ring at intervals of 10, 25 and 40 minutes. If the bells all ring at 9:05 am, what is the next time at which they will all ring together?


Answer: Puzzle power


Lexie has thought of two numbers. Their highest common factor is 6. Their lowest common multiple is 36. What numbers might Lexie be thinking of?


Today’s Marks: /8 101


Marks:


/2


Week 24 | Revision 4


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