Addition and Subtraction Equations

Micah has 50 tickets to sell. His friend gives him more tickets. He now has 64 tickets to sell. How many tickets does his friend give him?

What is the first step of the problem?​ (a)  

• 64-50=?
• 50+64=?
• 50-?=64

Mr. B's and Mrs. Yu's classes had a contest. Mr. B's class read 90 books. Mrs. Yu's class read 70 books. How many more books did Mr. B's class read?

Choose the correct equation.

• 90 + 70 = ?

• 90 - 70 = ?

• ? - 70 = 90

• 70 + 90 = ?

30 fish are in a big bank. Some are red and the rest are blue. There are 10 blue fish in the tank. How many red fish are in the tank?

Fill in the equation.

30 ​ ​ ​ (a)   10 = ​ ​ (b)   ​

• 20
• -
• +
• 40