Adding and Subtracting Numbers Double Digits

18 - 9 =

20 - 10 =

16 - 8 =

9 + 9 =

6 + 6 =

10 + 10 =

7 + 7 =

10 - 5 =

Mr. Mullinax has 462 baseball cards. He wants to sell 181 of his cards online. How many baseball cards will he have left after he sells those cards?

• 543 baseball cards

• 281 baseball cards

• 321 baseball cards

• 283 baseball cards

Boulder Ridge is having an assembly in the multi-purpose room. The room can hold 500 seats. There are 323 students and teachers who will attend the assembly. How many seats will be empty?

• 823

• 177

• 187

• 822