100 sums

4
100 Sums How many sets of 4 different numbers can you add to equal 100?

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100 Sums. How many sets of 4 different numbers can you add to equal 100?. 100 Sums. What was your first strategy to get 4 different numbers to equal 100? How did you change your strategy as you found some solutions? What strategy did you hear in the class sharing that you really like?. - PowerPoint PPT Presentation

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Page 1: 100 Sums

100 Sums

How many sets of 4 different numbers can you add to equal 100?

Page 2: 100 Sums

100 Sums

What was your first strategy to get 4 different numbers to equal 100?

How did you change your strategy as you found some solutions?

What strategy did you hear in the class sharing that you really like?

Page 3: 100 Sums

100 Sums

Can you add 4 numbers to equal 100? Parameter: a+b=c, then b+c=d, then

c+d=100 Example: 1+5=6, 5+6=11, 6+11=17

Does not work!!!

Page 4: 100 Sums

100 Sums

Can you add 4 different numbers to equal 100?

Parameter: a+b=c, then b+c=d, then

c+d=100 Example: 16+25=41, 25+41=66,

41+66=107

Does not work!!!