Hannah has 20 counters. Use the counters to find the missing number.
Hannah has 20 counters. Use the counters to find the missing number: 11 plus the missing number plus five is equal to 11 plus nine.
There are 11 blue counters, five pink counters. How many green counters are there? One, two, three, four. 11 plus four plus five is equal to 11 plus nine. The missing number is four.
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