Question

an aquarium at a pet store has 18 black neon tetra fish in it. A customer buys 12 black neon tetra fish at the same time the store clerk adds 7 more black neon fish to the tank.How many black neon tetra fish are in the aquarium now?

Answer 1

223 would be the answer because if you multiply right you would get 223

Answer 2

18-12+7
6 + 7
13
Write an equation.
Subtract first- the customer buys 12 black neon tetra fish which means subtraction
addition- the store clerk puts in 7 more black neon tetra fish which means your gonna add 7