Common Core: 2nd Grade Math : Use Addition and Subtraction Within 100 to Solve One- and Two-Step Word Problems: CCSS.Math.Content.2.OA.A.1
Study concepts, example questions & explanations for Common Core: 2nd Grade Math
All Common Core: 2nd Grade Math Resources
Example Questions
Example Question #1 : Using Subtraction Within 100 To Solve Word Problems
On the morning of December 24th, a tree lot had 
This is a subtraction problem because we want to know how many trees were taken away, or sold, from the total. We take the number of trees they started with, and then subtract the number of trees they have left to find out how many they sold. 
Example Question #2 : Using Subtraction Within 100 To Solve Word Problems
Spot has a box of treats with 
This is a subtraction problem because we want to know how many of the total treats Spot has eaten. We take the total number of treats and then subtract the number of treats that are left in the box. 
Example Question #4 : Using Subtraction Within 100 To Solve Word Problems
The baseball team has 
This is a subtraction problem because we want to know how many balls are left over after each boy takes one. We start with the number of balls and then subtract the number that was taken. 
Example Question #5 : Using Subtraction Within 100 To Solve Word Problems
Jenny has 
This is a subtraction problem because we want to know how many games Jenny has left after she gives some to her friend. We take the total number of games that Jenny has, and then we subtract the number that she gave to her friend. 
Example Question #523 : Operations & Algebraic Thinking
Sarah got 
This is a subtraction problem because we want to know how many gifts she has left to open after she’s already opened some of her gifts. We take the total number of gifts she has, and then we subtract the number of gifts that she’s opened. 
Example Question #524 : Operations & Algebraic Thinking
Matt invited 
This is a subtraction problem because we want to find out how many of Matt’s invited friends were able to come to his party. We take the total number of people that were invited, and subtract the number of people that did not come. 
Example Question #525 : Operations & Algebraic Thinking
Ms. Smith’s class has 
This is a subtraction problem because we want to know how many students in Ms. Smith’s class are in school today out of the total number of students that she has. We take the total number of students and subtract the number of students who are not in school today. 
Example Question #526 : Operations & Algebraic Thinking
Joe has 
This is a subtraction problem because we want to know how many homework problems Joe will have left after he completes some of them. We take the total number of problems that he has and subtract the number that he plans to do tonight. 
Example Question #391 : Isee Lower Level (Grades 5 6) Quantitative Reasoning
Lisa has 
This is a subtraction problem because we want to know how many birthday parties Lisa has left to attend this year. We take the total number of parties that she is invited to, and subtract the number of parties that she has already been to. 
Example Question #391 : Numbers And Operations
A large pizza has 
This is a subtraction problem because we want to know how many slices of pizza are left over after we have eaten some of the slices. We start with the number of silces that we started with, and subtract the number of slices that we have eaten. 
All Common Core: 2nd Grade Math Resources
