What is the main focus of the lesson introduced at the beginning?

• Relating manipulative representations to a written method

• Multiplication strategies

• Addition techniques

• Geometry basics

In the example of 34 minus 17, why is it necessary to unbundle a ten?

• Because 17 is greater than 34

• Because 4 ones cannot subtract 7 ones

• Because 34 is an even number

• Because 17 is a prime number

When subtracting 25 minus 11, why is unbundling not required?

• Because 25 is a multiple of 5

• Because 25 is a prime number

• Because 5 ones can subtract 1 one

• Because 11 is less than 10

In the subtraction problem 22 minus 13, what is the first step?

• Add 10 to both numbers

• Unbundle a ten

• Multiply both numbers by 2

• Divide both numbers by 2

How many ones are left after unbundling a ten in the problem 34 minus 18?

• 8 ones

• 6 ones

• 10 ones

• 14 ones

What is the result of 71 minus 27 using the written method?

• 54

• 44

• 24

• 34

In the problem 53 minus 29, why do you need to unbundle a ten?

• Because 29 is a prime number

• Because 9 ones cannot be subtracted from 3 ones

• Because 29 is a larger number

• Because 53 is an odd number

What should you do if you don't have place value chips for subtraction?

• Use a calculator

• Use the written method

• Skip the problem

• Use a ruler

What is the answer to 48 minus 25 without unbundling?

• 23

• 13

• 18

• 33

What is the purpose of the seesaw assignment given at the end of the lesson?

• To practice multiplication

• To learn about fractions

• To practice subtraction problems

• To study geometry