| Term | Definition |
| Descreased By-
The population of whales decreased by 400 in the last year. | Subtraction |
| Increased By-
The class was increased by 15 students. | Addition |
| More Than-
His collection had 10 cars more than before. | Addition |
| Minus-
She had 10 dollars, minus the $2 drink. | Subtraction |
| Less-
She had 5 cards, less the 2 she gave her brother. | Subtraction |
| Difference Between-
What was the difference between their earning last week? | Subtraction |
| Combined-
They combined their allowances to buy the present. | Addition |
| Together-
Together they had 12 eggs. | Addition |
| More Than-
Jacob has 6 more marbles than Carlos. | Subtraction |
| Less Than-
Carlos has 6 marbles less than Jacob. | Subtraction |
| Fewer Than-
Jenny has six fewer cookies than Elizabeth. | Subtraction |
| Total-
There were 8 roses and 2 daisies. How many total? | Addition |
| Sum-
The sum of their earnings was $28. | Addition |
| Added To-
Her savings this week were added to her savings last week. | Addition |
| Altogether-
How much altogether? | Addition |
| In All-
How many carrots do they have in all? | Addition |
| Additional-
If he had ten additional baseball cards, how many would he have in all? | Addition |
| All-
If you combined all of their earnings how much would they have? | Addition |
| How Many More-
How many more daisies does Kate have than Jacob? | Subtraction |
| Left-
How many eggs are left? | Subtraction |
| Remain-
How many students remain on the bus? | Subtraction |
| -ER words-
How much heavier is Jack's bag than Mark's? | Subtraction |
| Take Away-
If Liz takes away 2 of Jaime's cards. | Subtraction |
| Plus-
7 plus 5 | Addition |
| Change-
The book cost $5 he paid with a $10 bill. What is his change? | Subtraction |
| Have Left-
She had 10 cookies she ate 2. How many does she have left? | Subtraction |
| Lost-
He had 7 pencils. He lost 4. | Subtraction |
