A doubles fact refers to a simple arithmetic concept where two identical numbers are added together, resulting in a sum that is double the value of one of those numbers. For example, the doubles fact for 4 is 4 + 4 = 8. These facts are often used in early mathematics education to help students understand addition and enhance their number sense. Recognizing doubles facts can also aid in solving more complex addition problems.
what is double 13
8-7
4+5=9
Yes it is 9+9=18
5+5=10
what is double 13
2 times1
8-7
4+5=9
Yes it is 9+9=18
5+5=10
7 + 7+1=15
7+6
It is one of several correct interpretations.
4+4
4 + 4 +1
7+8=15? Answer is 7+7=14