Think like a mathematician3 Work with a partner to answer this question.a The expression ab−dc has a value of 24 . Write values for a,b,c and d wheni a,b,c and d are all positive numbersii a,b,c and d are all negative numbersiii a,b,c and d are a mixture of positive and negative numbers.b Discuss the methods you used, and the values you found, with other learners in your class.c Look at the Thinking and Working Mathematically characteristics. Which characteristics do you think you have used here?
Q. Think like a mathematician3 Work with a partner to answer this question.a The expression ab−dc has a value of 24 . Write values for a,b,c and d wheni a,b,c and d are all positive numbersii a,b,c and d are all negative numbersiii a,b,c and d are a mixture of positive and negative numbers.b Discuss the methods you used, and the values you found, with other learners in your class.c Look at the Thinking and Working Mathematically characteristics. Which characteristics do you think you have used here?
Choose Positive Numbers: For i, let's choose positive numbers for a, b, c, and d. Start with simple numbers like a=4, b=6, c=2, and d=1. Calculate ab−dc to check if it equals a0.
Calculate ab: Calculate ab=4×6=24.
Calculate (c)/(d): Calculate (c)/(d)=12=2.
Subtract to Check: Subtract (c)/(d) from ab to get 24−2=22. Oops, that's not 24. Need to adjust the numbers.
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