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8/3/2019 Addition Strategies Vocabulary and Concepts
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Addition Strategies Vocabulary and Concepts
Vocabulary:
count on: For the number sentence 5+2 begin with 5 and count
on 67 to find your sum.
doubles and doubles +1 facts
Doubles Facts Doubles +1 Facts
0+0=0 0+1=1
1+1=2 1+3=3
2+2=4 2+3=5
3+3=6 3+5=74+4=8 4+5=9
5+5=10 5+6=11
6+6=12 6+7=13
7+7=14 7+8=16
8+8=16 8+9=17
9+9=18 9+10=19
10+10=20 10+11=21
When looking at the doubles and doubles + 1 facts, have your child
notice the patterns. First the patterns of the numbers as they
go down from top to bottom in each column and then how they
change going from left to right in the number sentence.
sum: the answer to an addition problem. In the number sentence
5+3=8, 8 is the sum.
8/3/2019 Addition Strategies Vocabulary and Concepts
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add: to find the sum of two whole numbers
number sentence: a sentence that uses an equal sign to indicate
that the expressions on either side of the equal sign stand for
the same number.
The Strategy of Count On
Procedure:
Given the problem 9+2, start at the bigger number which is the 9
and then just count on 1011.
Doubles and Doubles Plus 1
Procedure: Write a doubles problem 6+6=12. Then look at that
problem and say the first addend in your doubles + 1 problem will
be the same as it is in the doubles problem. The second addend
will be one digit higher as will the sum. 6+7=13
Make a TenProcedure:
Make a ten frame on a piece of paper.
Give the child an addition number sentence such as 9+5.
Have the child start with the bigger addend first.
Have them write 9 x marks in red on the ten frame. Have them
take out a green crayon and make one x in green in the last box
counting that as one of their 5 and then 4 xs underneath the ten
frame. Have them look at the ten frame and realize that it is aten and then add on the xs at the bottom by saying 11, 12. 13, 14.
x x x x x
X X X x x
X x x x
8/3/2019 Addition Strategies Vocabulary and Concepts
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The Associative Property of Addition:
The way in which three whole numbers are grouped in addition has
no effect on the sum.
Adding Three Sums:
Procedure: Give your child a number sentence with the addends
5+5+2. Have them find two addends that are the quickest to add
first and then add on the third to find the sum. This may be
done by looking for the doubles and then adding on the 2 or by
adding 5+2 and then adding on the other 5 whichever is easier for
your child.
Problem Solving Strategy: Make a Picture
Procedure: Write on a piece of paper: The Pet Shop has 5 black
puppies and 7 spotted puppies. How many puppies are there in
all?
1. Have your child read the problem.2.
Have your child circle the numbers 5 and 7.
3. Have your child underline the words in all and explain thatwhen we see the words in all it means to join two or more
groups or add.
4. Then have your child draw the 5 black puppies and the 7spotted puppies.
5. Have your child write a number sentence to explain thepicture.
6. Have your child solve and label the number sentence.