Add it up
8 + 7 = ?
15
What do we call a number being added to another number?
addend
16 − 7 = ?
9
Ava has 12 pencils. Max has 8 pencils. How many more pencils does Ava have?
4 pencils
There are 12 red balloons and 9 blue balloons. Then 5 balloons pop. How many are left?
16 balloons
14 + 9 = ?
23
What operation means putting two or more amounts together?
addition
25 − 8 = ?
17
Ben has 21 cards. Sam has 15 cards. How many fewer cards does Sam have?
6 cards
Mason has 18 cards. He gets 7 more and gives 6 away. How many cards does he have now?
19 cards
? + 8 = 26
18
What operation can mean taking something away?
subtraction
31 − ? = 19
12
Ella read 29 pages. Luke read 17 pages. How many more pages did Ella read?
12 pages
There are 35 cookies. Students eat 9 at lunch and 8 after school. How many cookies are left?
18 cookies
Mia has 17 stickers. Her teacher gives her 9 more. How many stickers does she have now?
26 stickers
What does unknown mean in an equation?
The answer we need to find
Sophie has 28 crayons. She gives 11 crayons to her friends. How many does she have left?
17 crayons
Carter has 14 toy cars. Jax has 9 more toy cars than Carter. How many toy cars does Jax have?
23 cars
A class collects 16 cans on Monday and 19 cans on Tuesday. They give 12 cans to another class. How many cans do they have left?
23 cans
Ethan has some toy cars. His friend gives him 13 more. Now Ethan has 32 cars. How many did he have at first?
19 cars
When you find how many more or how many fewer one group has than another, what are you doing?
comparing
Noah has some buttons. He loses 9 buttons. Now he has 16 buttons. How many did he have at first?
25 buttons
Emma has 32 stickers. Emma has 13 more stickers than Lily. How many stickers does Lily have?
19 stickers
There are 48 books on a shelf. Students check out 15 books in the morning and 12 books in the afternoon. How many books remain?
21 books