Vocab 1
To combine two or more groups (hint: join)
What is add?
A set of related number sentences
3 + 2 = 5
2+3 = 5
5 - 2 = 3
5 - 3 = 2
What is a fact family?
4 + 2 + 9
11
A number that is added to another number
What is an addend?
A mathematical sentence using symbols and numbers
What is a number sentence?
13 - 8
5
The answer to a subtraction problem
What is the difference?
The operation of taking away part of a group or comparing the difference in the sizes of two groups
What is subtraction?
Complete the fact family for 7 + 3
7 + 3 = 10
__ + __ = __
__ - __ = __
__ - __ = __
7 + 3 =10
3 + 7 =10
10 - 7 =3
10 - 3 =7
A term used to describe two or more numbers or expressions that have the same value
What is equal?
The answer to an addition problem
What is sum?
There are 14 students in Mrs. Jones’ reading group. Which could NOT be the number of girls and boys in the reading group?
a) 7 girls and 7 boys
b) 9 girls and 5 boys
c) 10 girls and 4 boys
d) 5 girls and 8 boys
d) 5 girls and 8 boys
A number sentence that uses the equals sign to show that two amounts are equal
What is an equation?
What is the difference between difference and sum?
Sum: answer to an addition problem
Difference: answer to a subtraction problem
Which fact does NOT have the same difference as 16-7?
a) 11-2
b) 19-10
c) 12-4
d) 18-9
c) 12 - 4