What does Doubles mean in 2nd grade math?
To get a double of a number, we add the same number to itself. For example, double of 2 is 2 + 2 = 4. It is easy to remember the numbers that we get by doubling one-digit numbers. …
What are doubles facts?
Double Facts are additions in which a number is added to itself. For example, 1 + 1, 2 + 2 etc. Internalizing double facts are helpful building blocks in developing fluency in adding single digit numbers.
What are double plus one facts?
“Double plus one” facts are based on knowing doubles first, then just counting on one. This allows students to answer questions in which two adjacent numbers, such as 4 and 5, are added: Double 4 = 8, so 4 + 5 = 8 + 1 = 9.
How do you teach doubles plus one strategy?
Doubles plus 1 is a strategy used to add two consecutive numbers that is, when they are next to each other. We simply add the smaller number twice or double it and then, add 1 to it, to get the final result. Here, for example, consecutive numbers 8 and 9 have been added using the doubles plus one strategy.
What are doubles plus one facts?
WHAT ARE NEAR doubles for kids?
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.
What is the double 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.
How to teach doubles in math?
Once the topic has been thoroughly introduced I like to reinforce the doubles facts by playing a couple of games. This game is called, “I have, who has”. You can use this game for many math concepts but I particularly like it for teaching doubles. Someone starts with 1 + 1 and they read their card, “I have the eyes double, 1 + 1 = 2.
How can I Help my Grade 2 kids add near doubles?
Streamline the practice of your grade 2 kids with our printable adding near doubles worksheets. Transform any addition equation to a doubles fact and add or subtract 1 or 2 from it to solve another fact. Members, Please LOG IN to download.
Why is it important to know your doubles facts?
Mental math skills are integral to our daily lives and as such we should be teaching them to our students. Knowing their doubles facts is a key component in being able to use a variety of mental math strategies such as doubles plus or minus one, two, or three.
How do you solve the addition problem with doubles +1?
Apply the doubles +1 strategy by doubling the smaller addend and adding 1 to it. Recall the adding doubles fact for 4 and solve the addition problem in a jiffy!