Subtraction Across Zeros: A Deep Dive

What is the primary focus of the video tutorial?

• Adding large numbers

• Subtracting across zeros using proof drawing

• Multiplying decimals

• Dividing fractions

Why do we only draw the larger number in proof drawing for subtraction?

• To simplify the drawing

• Because it represents the total from which we subtract

• To save drawing space

• To make it more challenging

What does one hundred block break down into?

• 100 ones

• 10 tens

• 20 fives

• 5 twenties

What is the purpose of breaking apart hundreds and tens in the proof drawing?

• To make subtraction easier

• None of the above

• To increase the number of blocks

• To confuse the students

How many ones are created when breaking down a ten?

• 10

• 20

• 100

• 5

How is the proof drawing organized to keep track of the numbers?

• By keeping groups of 5

• By labeling each block

• None of the above

• Using different colors

What is the first step in the actual subtraction process described in the video?

• Subtract the hundreds

• None of the above

• Subtract the tens

• Subtract the ones

How many hundreds are left after subtracting one hundred?

• Five

• Four

• Three

• Two

What is the result of 10 minus 8 in the ones place?

• 4

• 3

• 2

• 1

What is the final answer of the subtraction 500 minus 138?

• 362

• 372

• 382

• 392