A Hundred Is Ten Tens

Question 1

Liam has ten "ten‑rods" (each rod stands for the number 10). He first groups the pencils on each rod into a set of ten, then he ties the ten rods together to make one new rod. Which statement correctly explains what the new rod represents and why?

Accepted Answer

The new rod represents 100 because ten groups of ten become one hundred.

Answer

The new rod still represents 10 because tying the rods does not change their value.

Answer

The new rod represents 110 because after making ten groups of ten he added another ten.

Answer

The new rod represents 90 because one of the ten‑rods was left out when he tied them.

Question 2

Sam has 60 single unit cubes and a pile of flat blocks, where each flat block represents ten units. He first changes the 60 unit cubes into flat blocks, then adds more flat blocks until the whole picture shows the number 100. How many flat blocks are in Sam’s final arrangement?

Accepted Answer

10 flat blocks

Answer

6 flat blocks

Answer

4 flat blocks

Answer

100 flat blocks

Question 3

You have ten "tens sticks" (each stick shows the number 10). If you bundle all ten of these sticks together, what number do you have now?

Accepted Answer

100

Answer

10

Answer

1,000

Answer

20

Try three questions

Liam has ten "ten‑rods" (each rod stands for the number 10). He first groups the pencils on each rod into a set of ten, then he ties the ten rods together to make one new rod. Which statement correctly explains what the new rod represents and why?

Sam has 60 single unit cubes and a pile of flat blocks, where each flat block represents ten units. He first changes the 60 unit cubes into flat blocks, then adds more flat blocks until the whole picture shows the number 100. How many flat blocks are in Sam’s final arrangement?

You have ten "tens sticks" (each stick shows the number 10). If you bundle all ten of these sticks together, what number do you have now?

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