Addition
Subtraction
Rounding
Word Problems/Bar Models
Definitions
100
56+32=
88
100
25-14=
11
100
Round 24 to the nearest ten.
DOUBLE JEOPARDY! (double points)
20
100
Fill in the bar model and answer the question.
There are 12 vampire bats still in the cave.
100
2+3=3+2
Which property of addition does this addition sentence show? (Identity, Commutative, or Associative)
Commutative (change order)
200
35+90
125
200
84-12=
72
200
Round 65 to the nearest ten.
70
200
Fill in the bar model and answer the question.
Jack and Sarah collected 36 sweets in total.
200
3+0=3
Which property of addition does the addition sentence show? (Identity, Commutative, or Associative)
Identity (mirror)
300
519+234=
DOUBLE JEOPARDY! (double points)
753
300
80-63=
17
300
Round 176 to the nearest hundred.
200
300
Fill in the bar model and answer the question.
Vince has spent 25 years outside of his coffin.
300
(2+3)+5= 2+(3+5)
Which property does this addition sentence show? (Identity, Commutative, or Associative)
Associative (adjust parentheses)
400
583+92=
675
400
890- 652=
238
400
Round 692 to the nearest hundred.
700
400
Nancy planted 77 daisies, 48 roses, and 39 tulips. About how many roses and tulips did she plant?
DOUBLE JEOPARY! (double points)
About 90 roses and tulips
400
What is a synonym for "About how many or how much"?
A. Pattern
B. Addition
C. Round
Round
500
212+532=
744
500
400- 234
166
500
Round 431 to the nearest ten.
430
500
Riley collected 124 cans for recycling on Monday, and twice that number on Tuesday. How many cans did she collect on Tuesday?
124+124= 248 cans
500
A _____is an ordered set of numbers or objects in which the order helps you predict what comes next.
A. Compatible number
B. Pattern
C. Identity Property of Addition
Pattern