7 + 8 =
15
10-7=
3
A cook fed 4 adult and 2 children. How many people ate?
6 people
200+21=
221
Bill is working on some math homework that is due tomorrow. Yesterday, he completed 1 problem. There are 10 problems all together. How many problems does Bill have left to finish today?
9 problems
11 + 3 =
14
20-20=
Patty jumped on the couch 2 times, and her friend Ron jumped on it 1 time. Then, the couch broke and they both got in big trouble. How many times did they jump on the couch in total?
3 times
315+5=
320
17-8=
9
12+9=
17
20-7=
13
7 the kids in my sister's class got a haircut over the summer. There are a total of 13 kids in her class. How many of them did not get a haircut over the summer?
6 kids
105+17
122
20+3=
23
17+2=
19
15 - 9 =
6
There was 15 books on a shelf. I took 6 books out to read. Now how many books are there?
9 books
350+10=
360
21+7=
28
50 + 20 =
70
50-29=
21
Danny's mother wants to make 16 sandwiches for the class picnic. She has already made 7 sandwiches. How many more sandwiches does she need to make?
9 sandwiches
500+29=
529
200+300
500