Question

Mark and Robyn used based-ten blocks to show that 200 is 100 times as much as 2. Whose model makes sense? Whose model is nonsense? Explain your reasoning.

Answer 1

Mark and Robyn used based-ten blocks to show that 200 is 100 times as much as 2.

Marks model shows 20 instead of 2. His model shows 200 is 10 times as much as 20. It does not make any sense.

Robyn model shows 2. His model shows 200 is 100 times as much as 2.

because 100 times 2 = 1=200

So Robyn model makes more sense.