Adding Fun: Estimate Sums with Number Lines!

Lily has 12 apples. She buys 5 more apples. How many apples does she have now?

• 10

• 20

• 17

• 15

Tags

CCSS.2.OA.C.3

Tom has 23 marbles. He gives 7 marbles to his friend. How many marbles does Tom have left?

• 10

• 20

• 16

• 15

Tags

CCSS.2.OA.A.1

There are 15 birds on a tree. 6 more birds join them. How many birds are there in total?

• 18

• 21

• 24

• 15

Tags

CCSS.2.OA.C.3

Sarah has 9 stickers. She finds 8 more stickers. How many stickers does she have altogether?

• 17

• 10

• 15

• 20

Tags

CCSS.2.OA.A.1

A box contains 14 chocolates. If you eat 3 chocolates, how many chocolates are left in the box?

• 12

• 9

• 10

• 11

Tags

CCSS.2.OA.A.1

In a garden, there are 10 flowers. 4 more flowers bloom. How many flowers are there now?

• 12

• 10

• 14

• 16

Tags

CCSS.2.OA.A.1

A toy store has 18 teddy bears. They receive a shipment of 5 more teddy bears. How many teddy bears are there in total?

• 25

• 20

• 23

• 18

Tags

CCSS.2.OA.A.1

Jack has 7 toy cars. His brother gives him 6 more toy cars. How many toy cars does Jack have now?

• 10

• 13

• 12

• 15

Tags

CCSS.2.OA.A.1

Emma read 11 pages of a book. Later, she reads 9 more pages. How many pages did she read in total?

• 20

• 25

• 30

• 15

Tags

CCSS.2.OA.A.1

At a picnic, there are 20 sandwiches. If 5 sandwiches are eaten, how many sandwiches are left?

• 20

• 10

• 15

• 5

Tags

CCSS.2.OA.A.1