We began by guessing how many dice were in the glass jar. First, everyone estimated how may were in the jar. Then, we counted to check how many dice were actually in the jar. There were 55 dice in the jar!

Next, we discussed how we might round that number to complete the sentence ‘There are about ____ dice in the jar‘.

Rounding means replacing a number with an approximate value that has a shorter, simpler, or more explicit representation. Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to use.

We all agreed on the answer. 

There are about 60 dice in the glass jar!

We practiced rounding numbers together. Would we round up or down? 

The students completed the activities independently using their understanding of rounding. 

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