Question

Mark and Robyn used base- 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

100 X 2=200 which is Robyn's work

100 X 20=2000 which is Mark's work

So Robyn's work is correct

Answer 2

Robyn's model makes sense and Mark's model makes nonsense. Since every single block in a base-ten block is equal to one unit or one number, to show 200 requires two base-ten blocks (each shows 100 blocks).

How do base-ten blocks represent a number?

Base-ten blocks consist of cubes of equal lengths called blocks. For bigger numbers, these blocks are given as 1 by 10 for 10(1 column of 10 blocks) 10 by 10 for 100 (10 columns and 10 rows)

Comparing the given two models:

Need to show that 200 in 100 times as much as 2

Mark's model shows that 200 is 10 times as much as 20

So, his model gives 20 instead of 2. it makes nonsense.

Robyn's model shows that 200 is 100 times as much as 2

So, his model gives 100 × 2 = 200. It makes sense.

Thus, Robyn's, model makes sense in showing that 200 is 100 times as much as 2.

Learn more about base-ten bocks here:

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