We have been looking at formal methods of multiplication and investigating products in maths all week.  We ended the week with a challenge.  Using only certain digits, could we create the largest product possible?  More importantly we were asked to explain how we knew it was the largest product.

We started with just trial and improvement.   However, then we  began to think about which place value columns would have the most impact on the size of the number and put the largest digits there.  We are not saying that we are competitive at all but it was great fun trying to be the person that found the largest product.

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