Grade 2 STAAR: Estimating Sums & Using Number Lines

Lily has 3 apples and picks 5 more from the tree. How many apples does she have now? Use a number line to help you find the answer.

• 8

• 7

• 10

• 5

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

Tom has 12 marbles. He gives 4 marbles to his friend. How many marbles does Tom have left? Estimate the sum before calculating.

• 8

• 10

• 6

• 4

Tags

CCSS.2.OA.A.1

A farmer has 7 cows and buys 6 more. How many cows does he have in total? Use a number line to show your work.

• 13

• 15

• 12

• 10

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

Samantha read 8 books in January and 5 books in February. How many books did she read in total? Estimate the total number of books first.

• 10

• 15

• 12

• 13

There are 9 birds on a tree. 3 more birds join them. How many birds are there now? Use a number line to find the answer.

• 15

• 10

• 12

• 8

Tags

CCSS.2.OA.A.1

In a box, there are 10 chocolates. If you eat 2 chocolates, how many are left? Estimate how many chocolates you will have after eating some.

• 10

• 8

• 4

• 6

Tags

CCSS.1.OA.A.1

A toy store has 15 teddy bears. They sell 7 teddy bears. How many teddy bears are left in the store? Use a number line to help you solve this problem.

• 6

• 5

• 8

• 10

Tags

CCSS.2.OA.A.1

Emma has 4 stickers, and her friend gives her 6 more. How many stickers does Emma have now? Estimate the total before solving.

• 8

• 10

• 15

• 12

Tags

CCSS.2.OA.A.1

At a party, there are 5 balloons. If 8 more balloons are added, how many balloons are there in total? Use a number line to find the answer.

• 10

• 15

• 12

• 13

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

A gardener plants 6 flowers in the morning and 4 flowers in the afternoon. How many flowers did the gardener plant in total? Estimate the total number of flowers first.

• 15

• 8

• 12

• 10

Tags

CCSS.2.OA.A.1