Operations and Algebraic Thinking

There are 8 birds in a tree. 7 more birds fly in. How many birds are in the tree now?

• 8+7=15

• 15+7=8

• 8-7=15

• 8-7=1

Tags

CCSS.2.OA.C.3

Sofia has 10 crayons. She has 2 more crayons than Eli. How many crayons does Eli have?

• 10+2=12

• 10-2=8

• 10

• 2

Tags

CCSS.2.OA.A.1

There are 9 cars on the road. Some more cars drive by. Now there are 16 cars on the road. How many cars drove by?

• 16

• 9+16=25

• 9+7=16

• 9

Tags

CCSS.2.OA.A.1

Tom has 3 blue cars, 7 red cars, and 5 yellow cars. How many toy cars does Tom have in all?

• 10

• 3+7+5=15

• 7

• 3+7=10

Tags

CCSS.2.OA.C.3

Some children are on the playground. 9 more children come to play. Now there are 17 children on the playground. How many children were there at the start?

• 8+9=17

• 9+17=26

• 9-17=8

• 17

Tags

CCSS.2.OA.A.1

There are 18 balloons in a bag. Some balloons pop. Now there are 11 balloons in the bag. How many balloons popped?

• 0

• 11

• 18-7=11

• 18+11=29

Tags

CCSS.1.OA.D.8

There are 15 cookies on a plate. 8 cookies are eaten. How many cookies are left?

• 15-8=7

• 15+8=23

• 8

• 15

Tags

CCSS.2.OA.C.3

Ben has 7 toy cars. He has 5 fewer cars than Maya. How many toy cars does Maya have?

• 12-5=7

• 7-5-2

• 2

• 15

Tags

CCSS.1.OA.A.1

Lena has 14 stickers. Max has 9 stickers. How many more stickers does Lena have than Max?

• 14-9=5

• 14+9=23

• 9-5=4

• 14-10=4

Tags

CCSS.2.OA.A.1

Some frogs are sitting on a log. 9 frogs jump into the water. Now there are 10 frogs left on the log. How many frogs were on the log at the start?

• 19+10=9

• 9

• 10

• 19-9=10

Tags

CCSS.1.OA.A.1