WHAT ARE NEAR doubles equations?
A near double is a math fact that is close to a doubles fact. For example, 6+7 is considered a near double because it is close to the doubles fact 6+6. Near doubles could be doubles plus one facts, doubles plus two facts, or doubles minus one facts.
How do you teach near doubles?
To begin teaching students to extend the doubles and near doubles facts, focus on groups of 10. For example, we can think of 40+40 as 4 groups of 10 plus 4 groups of 10. Similarly, to solve 400+400 we can think, “4 groups of 100 plus 4 groups of 100.” This “extending” concept can be used in many other circumstances.
What are doubles in math for kids?
To get a double of a number, we add the same number to itself. For example, double of 2 is 2 + 2 = 4. Example: Michelle has 4 marbles and Jane has double the marbles that Michelle has. It is easy to remember the numbers that we get by doubling one-digit numbers.
What is the friendly number strategy?
WHAT IS A FRIENDLY NUMBER? In this case, we refer to friendly numbers as a number that is easy to work with. For example, multiples of 10 are “friendly” because they are easy to work with when we add or subtract. When we use the “friendly number” strategy for addition, it helps us work with big numbers.
Why do we teach doubles addition facts?
Practicing the Doubles Facts This helps them visualize the workings of 1 + 1, 2 + 2, 3 + 3, and 4 + 4. We want children to see that the doubles facts are simply adding a number to itself. To have fact fluency, students need to have automaticity with their doubles facts and this means they need lots of practice.
How do you teach Doubles addition strategy?
The Using Doubles strategy involves decomposing one addend to make a double with the other addend. For example 7 + 8 is the same as 7 + 7 plus 1 more. Double ten frames are great for exploring the strategy. Have students build each addend on a different ten frame using two-color counters.
