Name the Property
54 + 72 = 72 + 54 is an example of what property?
Commutative
The missing number in an addition sentence is called what?
Unknown
42 + 15; tens
40 + 20 = 60
What is 10 more than 980?
990
A horse weighs 1,723 pounds. A smaller horse weighs 902 pounds. How much do both horses weigh together?
2,625 pounds
99 + 0 = is an example of what property?
Identity
The answer in an addition sentence is called what?
the sum
369 + 72; tens
370 + 70 = 440
What is 10 less than 610?
600
A golf ball has 336 dimples. How many dimples do two golf balls have?
672 dimples
(61 + 84) + 23 = is an example of what property?
Associative
When you use place value to exchange equal amounts when renaming a number, you are doing what?
regrouping
298 + 555; hundreds
300 + 600 = 900
What is 100 less than 659?
559
Peter has $4,102 in his bank account on Tuesday. On Wednesday, $1,893 is added to his account. Is it reasonable to say at there is now about $7,000 in his account?
No, there is $5,995 in his account. $5,999 round to $6,000.
Any number + 0 is the definition of which propety?
Identity
What do we call a set of numbers that follow a certain order?
pattern
1,247 + 741; hundreds
1,200 + 700 = 1,900
What is 100 more than 893?
993
Henry and his two dogs take dog training lessons. Each dog needs 4 treats, 1 leash and 2 toys. How many items are needed for all the dogs?
14 items
Which property shows that the way addends are grouped does not change the sum?
Associative
What is a number called that is close to the exact value?
estimate (or reasonable)
840 + 73; tens
840 + 70 = 910
Maeve has a summer job earning $200 a month. In July Maeve saved $120 of the $200. In August, she saved $54. In September she saved $178. How much did she save over the three months?
$352