To join two or more numbers together to find out how much there is in total.
add
Joanne has a sticker album. She has 15 baseball stickers and 20 football stickers. How many stickers does Joanne have in her album?
35 stickers
42 + 14
56
13 + 56 + 14
83
10 + 10 + 10 + 10
40
The result of adding.
sum
Ty has 17 horses. He has 26 more chickens than horses. How many chickens does he have?
43 chickens
23 + 37
60
12 + 21 + 34
67
13 + 24 + 41 + 11
89
To rename ten in a place as one in the next greater place, or one in a place as ten in the next lesser place, in order to add or subtract.
regroup
There are 18 flowers in the vase. Marta puts 25 more flowers into the vase. How many flowers are in the vase now?
43 flowers
44 + 17
61
63 + 10 + 39
112
72 + 4 + 8 + 15
99
The value of a digit depending on its position in a number.
place value
Ted had 16 Pokemon cards. Kate gave him some more. Now Ted has 36 Pokemon cards. How many Pokemon cards did Kate give him?
20 Pokemon cards
36 + 52
88
40 + 37 + 15
92
45 + 13 + 34 + 4
96
A number that is added to another number or numbers
addend
Jenny found 16 rocks on Thursday, 35 on Friday, 24 on Saturday, and 15 on Sunday. How many rocks did she find all together?
90 rocks
27 + 9
36
7 + 59 + 28
94
14 + 6 + 23 + 37
80