Mrs. Smith had 6 markers and bought 7 more. How many markers does she have in all?
Bought, More, or In All
Lexi had 45 ties and then she sold some.
45 - n
What does n represent?
N= ties sold
Mrs. Smith had 6 markers and then bought 7 more.
6+7
3 cards.
7-4=3
INPUT OUTPUT
0 5
1 6
2 7
RULE:
+5Ben had 26 marbles and gave 6 away. How many does he have left?
Gave, Away, or Left
Angela had 7 cards and Matt gave her some more.
7+n
What does n represent?
N= the number of cards Matt gave to Angela
Ben had 26 marbles and gave 6 away.
26-6
Mary baked 24 cookies and she gave 12 to her friends. How many did she have left?
12 cookies.
24-12=12
INPUT OUTPUT
3 2
2 1
1 0
RULE:
-1
Jim had 9 apples. He ate 2. How many apples does he have left?
Ate or Left
Mike had 12 napkins and then he got some more.
12 + n
What does n represent?
N= Napkins Mike got
Lexi had 7 cards. Matt gave her more.
7+n
There are 6 people in the room and 9 more entered. How many people are in the room?
15 people.
6+9=15
INPUT OUTPUT
6 16
8 18
10 20
RULE:
+10
Mary had 24 cookies, and gave 12 to her friends. How many did she have left?
Gave or Left
There were 20 desks in the room. Some students sat down. How many desks were open?
20-n
What does n represent?
N= The number of students who sat down
OR
N= The number of desks taken
Angela had 45 ties but then sold some.
45-n
INPUT OUTPUT
6 16
8 18
10 ?
20
INPUT OUTPUT
10 5
20 15
30 25
RULE:
-5
6 people; are in the room. 9 more entered. How many people are in the room?
Gwen wrote 10 songs. Pharrell helped her write some of the songs. How many songs did Gwen write on her own?
10-n
What does n represent?
N=the number of songs that Pharrell helped Gwen write
There were 6 people in the room. 9 more entered.
6+9
INPUT OUTPUT
8 18
10 20
12 ?
22
INPUT OUTPUT
10 20
12 22
14 24
+10