5+5=10
what is double 13
Yes it is 9+9=18
It is one of several correct interpretations.
yes because if you do 1*1 it will eqaule 2 and that will double the fact1!
5+5=10
4 + 4 +1
what is double 13
7 + 7+1=15
Doubles are the facts in which both addends are the same. For example 3+3=6. The doubles plus one are the facts in which one addend is larger than the other by one. Examples 3+4=7, 6+7=13, 5+6=11, 3+2=5. Learning your doubles plus one should involve knowing the doubles and mentally adding the additional one.
Yes it is 9+9=18
7+6
It is one of several correct interpretations.
4+4
yes because if you do 1*1 it will eqaule 2 and that will double the fact1!
4+5=9
1 plus 1 equals one fact