Addition
45 + 10=
55
63 - 10=
53
33 __ 32
Greater Than
33 > 32
What is a SUM?
The answer to an addition problem.
The result when two or more numbers are added together.
What is the EXPANDED FORM of 745?
700 + 40 + 5
34 + 26 =
60
92-41=
51
69 __ 96
Less Than
69 < 96
What is a DIFFERENCE?
The answer to a subtraction equation.
or
The result when you subtract an amount from a number.
Mental Math:
What is 10 more than 68?
78
Tina has 37 red marbles and 41 orange marbles. How many marbles does she have in all?
There were 87 water bottles at the picnic. The students drank 62 water bottles. How many water bottles were left over?
25 water bottles were left over.
456 __ 768
Less Than
456 < 768
What is SKIP-COUNTING?
Counting by a number other than ones.
Mental Math:
There are 234 people in the movie theater. 100 more people come in. How many people are in the movie theater?
334 people.
While hiking the kids passed 187 wildflowers and 61 trees. How many flowers and trees did they pass?
They passed 248 flowers and trees.
There are 27 bananas. The girls ate 8 bananas. The boys ate 5 bananas. How many bananas are left?
There are 14 bananas left.
587 __ 578
Greater Than
587 > 578
What is PLACE VALUE?
What each digit of a number is worth based on its position.
Example: ones, tens, hundreds
Monday morning there are 9 books on the shelf. The librarian adds 11 new books. Students check out 6 of the books. How many books are on the shelf now?
9 + 11 - 6 = 14
There are 14 books on the shelf.
Sally fed the elephants at the circus 28 peanuts. Molly fed the elephants 18 peanuts. Ty fed the elephants 20 peanuts. How many peanuts did the elephants eat?
The elephants ate 66 peanuts.
There are 54 rides at the county fair. Theo has already been on 24 rides. How many rides has he not been on?
30 rides
1,456 __ 1,546
Less Than
1,456 < 1,546
What is an ADDEND?
The numbers that you add together to get a sum.
Skip-count by 5's from 10 to 45.
5, 10, 15, 20, 25, 30, 35, 40, 45