Math Vocabulary
What is a near doubles fact?
A near double is a math fact that is close to a doubles fact.
6 + ______ = 10
4
Which number is greater 100 or 105?
105
8 + _____= 16
8
Emily has 4 cats. Troy does not have any cats. How many cats do Emily and Troy have in all?
You must explain your answer.
4 + 0 = 4
Give an example of a doubles fact.
1+1=2
2+2=4
3+3=6
4+4=8
5+5=10
6+6=12
7+7=14
8+8=16
9+9=18
10+10=20
There are 9 frogs in a pond. 1 more frog join them. How many frogs are there in all?
1 + 9 = 10
order these numbers from greatest to least.
25, 12, 3, 15, 17
25, 17, 15, 12, 3
_____+ 5 = 10
7 + _____ = 15
5
8
Tim picked 8 apples. Kate picked 2 more. How many apples are there in all?
You must explain your answer.
8 +2= 10
3 + 4= 7
Explain part, part, whole using the example.
3 and 4 are the two parts (groups).
7 is the whole. The two parts together make a whole.
Pete has 5 red apples. He also has 3 bananas and 2 pears. How many pieces of fruit does Pete have in all?
3 + 2 = 5
5+ 5 = 10
10 is the sum
What number is next 30, 40,___
50
7 +_______=14
8 + ______ = 17
7
9
Julia has 11 dolls. Then she made 2 more dolls. How many dolls does Julia have in all?
11 + 2= 13
3 + 8 = 11
What are the addends in this problem? What is the sum? Explain.
3 and 8 are the addends because they are the two numbers being added.
The sum is 11 because it is the answer.
3 + ________ = 10
2 + ________ = 10
7
8
There are 6 birds in the tree. There are 4 squirrels hiding in the bush. How many more birds than squirrels?
Jeff bought 6 apples. Jim bought the same number of apples. How many apples did they buy in all?
6 + 6 =12
Ray has 9 green marbles and 6 blue marbles. How many marble does Ray have in all?
You must explain your answer.
9 + 6 = 15
What is the communicative property?
The order of the addends in an equation does not change the sum.
6 + 4= 10
4 + 6= 10
Rita has 8 marbles. She finds 2 more marbles. How many marbles does Rita have in all?
Explain by giving an addition equation.
8 + 2 = 10
count backwards by 2s, start at 20.
20, 18, 16, 14, 12, 10, 6, 4, 2
Is 8 + 9 = 17 a doubles fact or a near double fact?
Explain what type of fact is it?
No. 8 and 9 are not the same number. In a doubles fact, both numbers being added are the same. This is a near doubles fact.
David has 8 chocolate bars. Daniel has the double of what David has. How many chocolate bars does Daniel have?
You must explain your answer.
8+8=16