The doubles fact for 7 8 is 7+7+1=15.
In simple words, Double Plus One Fact is a strategy for adding two consecutive numbers . To get final result then simply add a smaller number to itself or double it then and add 1.
The numbers that are added together are known as doubles. For example, 5+5=10, 3+3=6, so the doubles plus one fact are simply adding 1 to the resultant of the double fact.
For given, the doubles fact is 7+7=14, then add 1 to get 15.
As a result, 7+7+1=15 is the doubles fact for 7 8.
To learn more about doubles fact refer here
https://brainly.com/question/6244809
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