The property which states that the grouping of the addends does not change the sum.
Example: (4+5)+2 = 4 +(5+2)
What is the Associative Property of Addition?
100
6+0 =
0+6 =
What is 6 & the Identity Property of Addition?
100
$86 + $11 =
What is $97?
100
Estimated sum of 64 + 34 =
What is 90 (60 + 30)
100
Last year $3,295 was spent on a skate park. This year $3,999 was spent. How much money was spent over the two years?
What is $7,294
200
A number close to the exact value; about how much
What is an Estimate?
200
(2 + 5) + 8 = 5 + (8 + 2)
What is 15 & the Associative Property of Addition?
200
A music group bought two new guitars. Each guitar cost $488. How much did the guitars cost?
What is $976?
200
Cole practices violin for 47 minutes three nights a week. Two other nights he has soccer practice for 29 minutes. About how many minutes does Cole spend practicing each week?
What is estimate & 210 minutes (50 + 50 + 50 + 30 + 30)
200
The Appalachian Trail is 2,174 miles long. How many miles is it if you hike it one way and then back?
What is 4,348 miles
300
To use place value to exchange equal amounts when renaming a number.
What is Regrouping?
300
12 + 8 =
8 + 12 =
What is 20 & the Commutative Property of Addition?
300
Rory earns $6 allowance each week. Aida earns $4 each week. If Rory and Aida put 2 weeks of their allowance together, how much money would they have?
What is $20?
300
Ryan has $10. Will has $9. Nathaniel has $20. Chris has $13. And Daniel has $18. If our class pooled our money together, would we have enough to buy Madden 15 for PS4 at $70?
What is Exact & no, we only have $60
300
Mr. Rosa's car cost $7,681. Mrs. Seligman's car costs $1,406 more than Mr. Rosa's car. How much do their cars cost altogether?
What is $16,768
400
Numbers in a problem or related numbers that are easy to work with mentally.
What are Compatible Numbers?
400
25 + 17 =
17 + 25 =
What is 42 & the Commutative Property of Addition?
400
$74 + $25 =
What is $99?
400
To enter a dance competition, Vivian needs $35 for an entrance fee and $75 for her costume. How much money does Vivian need?
What is Exact & $110?
400
5,555 + 3,555 =
What is 9,110
500
The property that states that the order in whick two numbers are added does not change the sum.
What is the Commutative Property of Addition?
500
13 + (7 + 10) =
10 + (13 + 7) =
What is 30 & the Associative Property of Addition?
500
Rondell's piggy bank has $23. For his birthday, his grandmother gave him $15. How much money does he have now?
What is $38?
500
The Eagles had 2,357 fans come to an autograph signing on Friday. On Saturday, 3,468 fans came out. About how many autographs were signed?
What is 5,800 autographs?
500
Ryan had 3,589 points. Will had 6,892 points. If Nathaniel, Chris, and Daniel were counting the points at 4:30pm and each made $50, how many points were scored?