Eureka math lesson 12 problem set 5.2 July 8, 2019 16 32 64 128 Eureka math lesson 12 Eureka math grade 5 module 4 lesson 12 problem set Eureka math grade 5 lesson 12 module 4 Eureka math grade 5 module 2 lesson 10 problem set Eureka math module 5 lesson 2