what is double 13
13
13
13/30
yes! 11+2=13 12+1=13
Knowing that 6 plus 6 equals 12 helps in solving the near double 6 plus 7 by recognizing that 7 is just one more than 6. Since 6 plus 6 equals 12, you can add one more to that sum to find that 6 plus 7 equals 13. This shows how understanding doubles can simplify calculations involving nearby numbers.
7+6
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.
13+13+13+13+13+13+13+13+13+13 = 13 * 10 = 130.
91
31
13
1/2 + 1/12 is 7/12
13
13/30
yes! 11+2=13 12+1=13
1+2+3+15+13=35
13 plus 13 is equal to 26