If $2\times8=16$2×8=16, what is $20\times8$20×8?
If $4\times8=32$4×8=32, what is $4\times80$4×80?
If $4\times16=64$4×16=64, what is $4\times160$4×160?
If $3\times12=36$3×12=36, what is $30\times12$30×12?
Record and interpret additive and simple multiplicative strategies, using words, diagrams, and symbols, with an understanding of equality
Generalise the properties of addition and subtraction with whole numbers