Doubles
Double 4 equals?
8
Can you find a double in a near doubles fact? How do you know?
Yes, because the near double will always be 1 or 2 numbers/addends greater than the double.
1 + 1 = 2, so 1 + 2 = ?
3
Double 15 equals?
30
Can you find a double in this equation? if so, what is the double?
4+5=9
Yes, double 4!
3 + 3 = 6, so 3 + 4 = ?
7
Double 100 equals?
200
Can you find a double in this equation? if so, what is the double?
4+6=10
4+4=8
I know that 10 is 2 more addends than 8.
5 + 5 = 10, so 5 + 6 =?
11
Double 150 equals?
300
Can you find a double in this equation? if so, what is the double?
5+6=11
5+5= 10
I know that 11 is one more than 10.
5 + 5 = 10, so 5 + 7 = ?
12
What makes a double?
- Both addends are the same in an equation.
-Every cube has a partner
-The term "double" is total
- Count on from the first group to find the total
What is a near double?
-One added is 1 or 2 numbers greater than the other addend.
-Use 1 model to solve both facts.
3 + 3 = 6, so 3 + 5 = ?
8