Estimating Sums and Differences in Fun Math Problems

Lily has 15 apples. She gives 7 apples to her friend. How many apples does she have left? Estimate the answer first and explain your reasoning.

• 12

• 6

• 8

• 10

Tom has 8 toy cars. He buys 5 more toy cars. How many toy cars does he have now? Estimate the total and explain how you found your answer.

• 10

• 13

• 15

• 12

Tags

CCSS.2.OA.A.1

A farmer has 20 chickens. 4 chickens run away. How many chickens does the farmer have now? Estimate and explain your thought process.

• 16

• 15

• 10

• 18

Tags

CCSS.2.OA.A.1

Sarah has 12 stickers. She gives 3 stickers to her brother. How many stickers does she have left? Estimate and explain your answer.

• 6

• 12

• 10

• 9

Tags

CCSS.2.OA.A.1

In a box, there are 25 crayons. 10 crayons are broken. How many crayons are not broken? Estimate and explain your reasoning.

• 5

• 20

• 10

• 15

Tags

CCSS.2.OA.A.1

Jake has 30 marbles. He loses 12 marbles. How many marbles does he have now? Estimate the difference and explain how you calculated it.

• 18

• 25

• 15

• 20

Tags

CCSS.2.NBT.B.5

Emma has 18 books. She buys 7 more books. How many books does she have in total? Estimate and explain your reasoning.

• 30

• 15

• 25

• 20

A baker made 50 cookies. He sold 23 cookies. How many cookies does he have left? Estimate and explain your answer.

• 27

• 23

• 50

• 30

Tags

CCSS.2.OA.A.1

There are 40 students in a class. 15 students go home early. How many students are still in class? Estimate and explain your reasoning.

• 35

• 20

• 25

• 30

Mia has 22 balloons. 5 balloons pop. How many balloons does she have left? Estimate and explain how you arrived at your answer.

• 17

• 10

• 15

• 20

Tags

CCSS.2.OA.A.1