Rounding - nearest 10's
46
50
468
500
The numbers you add are called?
addends
8 + 0 = 8
Is an example of what property?
Identity
Round to nearest place value
531
500
71
70
103
100
The answer to an addition problem is called?
The sum
6 + 9 = 9 +6
This is an example of what property?
Commutative
If Sally had 27 pieces of candy and John had 42, about how many pieces would that be altogether?
70
365
370
551
600
Another name for rounding can be?
Estimate
2 + (5 + 11) = (2 + 5) +11
This is an example of what property?
Associative
What is the number in standard form?
5,000 + 60 + 2
5, 062
2,836
2,840
4,074
4,100
12 + 8 = 20 is an example of what?
A. An estimate
B. An addition sentence
C. A sum
B. An Addition sentence
Which problem is an example of the associative property?
A. 3 + 2 = 2 + 3
B. 45 + (2 + 8) = (45 + 2) + 8
C. 78 + 0 = 78
B.
When rounding by tens,what numbers will round to 400?
345 389 395 411 404 499
395 404
3,596
3,600
12,960
13,000
352 = 300 + 50 + 2
This is an example of what?
Expanded form
Why is the associative property good to use?
Because it can help you to change the order of the what you are adding to make a ten or make it easier to add.
Round each number to the nearest 10 then add.
725 + 152
880