Is 25 odd?
Yes
What property is:
3+5=8 and 5+3= 8
Commutative Property of Addition
Round to the nearest ten.
8
10
8+8
16
For rounding:
1, 2, 3, 4 your number goes ___________
down
Is 30 even?
Yes
What Property is:
7+0= 7 or 14+0= 14
Identity Property of Addition
Round the nearest ten
45
50
36 + 24
60
For rounding:
5, 6, 7, 8, 9 your number goes ______
Is 11 even or odd number?
Odd number
What property is:
(7+3) +5= 15
7+(3+5)= 15
Associative Property of Addition
Round to the nearest hundred:
343
300
315 + 243
558
Estimate the sum: 281 + 125 =
Is 12 even or odd?
Even
What is the missing number?
9+3= 3+ ____
Round to the nearest hundred:
358
400
38 + 25 + 63
126
Estimate the sum:
241 + 128=
200 + 100= 300
Find the sum, then choose Yes or No to tell whether the sum is even or odd.
4+ 5=
9... odd
Find the missing numbers
(7+3)+ 8= 7+ (___ + ____)
3 + 8
Round to the nearest ten and hundred:
235
ten: 240
hundred: 200
362 + 119
481
58 + 20= 78 + 2= 80 + 2= 82