HCF and LCM
The below QuickQuestion Interface © generates random questions on finding the HCF and LCM of numbers.
First choose if you want question on the Highest Common Factor or Lowest Common Multiple (or choose Random to get a mixture of both).
Next choose if you want 2 or 3 numbers to appear, again choosing Random will give a mixture.
Now choose the size of the numbers you want to deal with.
Finally, if you want to use your own set of numbers, input them in the relevent boxes, and choose Yes.
There is a 10QQI version of this activity which generates 10 random questions at a time.
First choose if you want question on the Highest Common Factor or Lowest Common Multiple (or choose Random to get a mixture of both).
Next choose if you want 2 or 3 numbers to appear, again choosing Random will give a mixture.
Now choose the size of the numbers you want to deal with.
Finally, if you want to use your own set of numbers, input them in the relevent boxes, and choose Yes.
There is a 10QQI version of this activity which generates 10 random questions at a time.
Ideas for Teachers
The QQI activities are a great way to get all students working. Put random questions on the board, and then get students to answer them on mini-whiteboards. Once all students have answered, and held up their solutions (with working), reveal the answer to see if they were right. Discuss any misconceptions from the working they have shown, or if they have all got it correct, move on to another question (changing the options to make if more difficult if necessary).
The QQI activities are a great way to get all students working. Put random questions on the board, and then get students to answer them on mini-whiteboards. Once all students have answered, and held up their solutions (with working), reveal the answer to see if they were right. Discuss any misconceptions from the working they have shown, or if they have all got it correct, move on to another question (changing the options to make if more difficult if necessary).
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