When you see the word, "About" in a story problem, that means you are going to ....
What is estimate or round.
100
Read the following: There are 365 days in one year. There were 173 sunny days this year. Write a number sentence to find out the number of days that were not sunny.
What is 365-173=
200
Round 47 to the nearest ten
What is 50
200
Pokes
What is Plan
200
439
-116
______
What is 323?
200
The unknown is....
Your answer
200
1,321
-1,204
________
What is 117?
300
Round 782 to the nearest tens
What is 780
300
Slow
What is Solve
300
654
- 47
_______
What is 607?
300
When I do not need to know the exact answer, I can...
What is estimate
300
What is the unknown is this problem?
580
-?50
____
430
What is 1?
400
Round 3,487 to the nearest hunderedth
What is 3,500
400
Chickens
What is Check?
400
961
-843
_______
What is 118?
400
A number sentence in which one quantity is taken away from another quantity is...
What is a subtraction sentence
400
Students want to make 425 get well cards. So far they have made 165 cards. How many more cards do they need to make?
What is 260 cards?
500
Round 1,626 to the nearest tens
What is 1,630
500
When you want to find out "how many more,"you need to do what?
What is subtract?
500
506
-223
______
What is 283?
500
Two operations that can undo each other, as in addition and subtraction, are called....
What are inverse operations
500
How are addition and subtraction related?
What is You can use them to check the other one. Ex. Addition will check subtraction.