Unit 2 Review (Bridges)

Pablo says that there are 3 tens in 230. Hunter says there are 23 tens in 230. Their teacher says they're both right. How can that be so?

• Teachers know everything so it must be right.

• 3 x 10 = 230 and

  23 x 10 = 230. They both show the same thing.

• 3 x 10 = 30 and 23 x 10 =30. Pablo is looking only at the tens place with the 2 hundreds separate. Hunter is looking at the hundreds and tens together.

What is the missing factor?

• 10,000

• 5

• 4

• 15,000

What is the missing area?

• 6

• 5

• 15

• 150

What is the missing factor?

• 1,600

• 80

• 25

• 31

What is the missing factor? (4x_=40)

• 10

• 100

• 1

• 5

What is the partial product? (4x4=_)

• 40

• 16

• 4

• 20

Which would be an equation for this whole problem?

• 4x14=56

• 4x10=40

• 4x4=16

What is the missing factor? (10x_=100)

• 10

• 5

• 50

• 1

What is the missing partial product for the top right? (1x10=_)

• 10

• 15

• 5

• 1

What is the missing partial product for the bottom right? (1x5=_)

• 10

• 15

• 5

• 1