Question

Rex's class raised frogs from tadpoles. The class has 21 students, and each class raised 6 tadpoles. All but six of the tadpoles grew to be frogs. Write a number sentence to show how many frogs the class has.

Answer 1

0+6
the number 0 is for how many frogs you started with and the +6 is for how many tadpoles you gained.

Answer 2

do 21 students 21*6=126 then do 126-6 that would give you 120 frogs that the class has