Mental Math Adding and Subtracting

Mental Math Adding and Subtracting

Description: CCSS.Math.Content.2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Tags: CCSS.Math.Content.2.OA.B.2 2nd Grade, 2nd grade math, Addition, Subtraction

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⎙ Print Exercise Worksheet
Question 1 (Short Answer, 10 points)

Officer Jenny helped 8 people today, and Officer Bob helped 7 people. How many people did they help in total?






Question 2 (Short Answer, 10 points)

There were 15 donuts at the police station. Officer John ate 5. How many donuts are left?






Question 3 (Short Answer, 10 points)

Officer Amy found 6 lost dogs and Officer Tim found 9 lost cats. How many lost animals did they find together?





Question 4 (Short Answer, 10 points)

There are 18 police cars in the station. 8 cars went out on duty. How many cars are left in the station?



Question 5 (Short Answer, 10 points)

Officer Mary saw 12 balloons in the park. She found 7 more balloons later. How many balloons did she see in total?



Question 6 (Short Answer, 10 points)

Officer Peter has written up 11 car accidents today. He wrote up 7 yesterday. How many accidents has he written up this week so far?





Question 7 (Short Answer, 10 points)

Officer Jenny helped Officer Tim solve 3 cases. Then, they solved 5 more cases together. How many cases did they solve in total?



Question 8 (Short Answer, 10 points)

The police station had 19 complaints in the morning. Officer Michelle worked on 6 complaints. How many are left?





Question 9 (Short Answer, 10 points)

Officer Bob and Officer Steve caught 4 robbers in the morning. They caught 7 more robbers in the evening. How many robbers did they catch in total?





Question 10 (Short Answer, 10 points)

Officer Smith has 9 police badges. He gave 4 badges to the new agents. How many badges does he have left?