Page 32 - 新思维数学学生用书6 样章

2.3 Common multiples and factors

8 Isabella has three digit cards.

1 5 6

Which two cards could she use to make:

a a common multiple of 5 and 13?
b a common factor of 60 and 90?

Think like a mathematician

The sequence 4, 2, 1, 3 uses the
numbers 1 to 4 so that each number is Tip

either a factor or a multiple of the

previous number. Use digit cards
Each number is used once only. that you can easily

Find a similar sequence that uses the move around.
numbers 1 to 6.

You will show you are specialising when you find solutions to the problem.

Look what I can do!

I can find common multiples.
I can find common factors.

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