Standard Form Conversions
The below QuickQuestion Interface © generates random questions on converting between normal numbers and numbers given in standard form.
Choose the maximum power for the numbers you want to generate (up to 20).
Decide on which way you wish to convert, or choose NonStandard to get examples where they are multiplied by a power of 10, but not in standard form. For a mixture of types, choose Random.
Finally, choose whether the powers should be positive, negative or both.
When typing answers, if giving an answer in standard form enter it in the form "1.3436x10^3".
There is a 10QQI version of this activity.
Choose the maximum power for the numbers you want to generate (up to 20).
Decide on which way you wish to convert, or choose NonStandard to get examples where they are multiplied by a power of 10, but not in standard form. For a mixture of types, choose Random.
Finally, choose whether the powers should be positive, negative or both.
When typing answers, if giving an answer in standard form enter it in the form "1.3436x10^3".
There is a 10QQI version of this activity.
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 miniwhiteboards. 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 miniwhiteboards. 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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