7: Advanced Multiplicative - Proportions and Ratios

 

Students at the Advanced Multiplicative stage are learning to choose appropriately from a range of part-whole strategies to solve and estimate the answers to problems involving multiplication and division. These strategies require one or more of the numbers involved in a multiplication or division to be partitioned, manipulated, then recombined.

Two thirds of 57
Three eighths of x is 27.
15:18:21 = 10:?:?