Rounding
What is 35 rounded to the nearest ten?
40
What property is this?
53 + 0= 53
Identity
What is the estimate to the nearest ten?
52 + 36=
50 + 40= 90
What is 40 to the nearest 100?
0
What property is this?
(12 + 5) - 2= 12 + (5 - 2)
Associative
What is the estimate to the nearest 100?
569 + 432=
600 + 400=1,000
What is 110 to the nearest 100?
100
What property is this?
5 + 4= 4 + 5
Commutative
What is the estimate to the nearest hundred?
556 + 299=
600 + 300= 900
What is 149 to the nearest ten?
150
What property is this?
(14 + 2) + 10= 14 + (2 + 10)
Associative
What is the estimat to the nearest ten?
432+ 322=
430 + 320= 750
What is 689 to the nearest hundred?
700
What property is this?
(12 + 20) + 5= 5 + (20 + 12)
Commutative
What is the estimate to the nearest ten?
951 + 432=
950 + 430= 1,380