Vocabulary
What do we call the answer to an addition problem?
sum
33 + 46
79
18 + 47
65
If John has 15 toy cars and Tom has 27 toy cars, how many toy cars do they have altogether?
42 toy cars
addends
37 + 56
91
189 + 36
225
One farmer has 336 lambs and another has 287. How many lambs do the two farmers have together?
623 lambs
equal
52 + 419
471
283 + 149
432
A man bought a pack of 150 balloons. Then he bought a pack of 350 streamers and 57 banners for a party. How many decorations did he buy altogether?
557 decorations
Name two key (action words) in a word problem that mean to add?
Answers will vary:
altogether, all, in all, together, total, total number, add, increase, increased by, more than.
235 + 447
682
17 + 79 + 81
177
There are 312 crayons in the drawer and 39 crayons on the desk. Alyssa placed 27 more crayons on the desk. How many crayons are now there in all?
378 crayons
What is the property in addition that means the order doesn't matter when you add numbers?
Example: 4 + 3 is the same as 3 + 4?
commutative property
589 + 477
1,066
128 + 49 + 152
289
Sandy grew 2238 rock-melons, Mike grew 755 rock-melons, and Sara grew 204 rock-melons. How many rock-melons did they grow in all ?
3, 197 rock-melons