Vocabulary
The answer to an addition problem.
414
+124
538
786-127=
659
4 + 5 = 6 + _
3
What is the difference?
The answer to a subtraction problem.
789+421
1210
812 - 151 =
661
12 - 8= 2 + _
2
What is the addend?
The numbers we add together to get the sum.
78 + 81 + 25 =
184
700-157
543
14- n = 9
5
What is a variable?
A letter that stands for a missing number.
788 + 214 =
1002
702-145
657
15 +n =25
10
what is an equation?
a number sentence.
89+12+45 =
146
627-281
346
20 + 5 = 12 + _
13