Subtracting 3-Digit Numbers Concepts

What math operation are we learning about with 3-digit numbers?

• Adding

• Multiplying

• Subtracting

• Dividing

What is the first tip for subtracting 3-digit numbers?

• Start with the biggest value

• Use column labels

• Always borrow

• Add numbers first

What is the second tip for subtracting 3-digit numbers?

• Start with the smallest value

• Use a calculator

• Subtract from the bottom number

• Ignore column labels

What do 'h', 't', and 'o' stand for when labeling columns?

• High, Tall, Old

• Hundreds, Tens, Ones

• Heavy, Tiny, Open

• Hot, Cold, Warm

Is 5 - 2 the same as 2 - 5?

• Yes, always

• No, never

• Sometimes

• Only with big numbers

In the problem 452 - 335, what numbers are in the ones column?

• 4 and 3

• 5 and 3

• 2 and 5

• 4 and 5

When you subtract numbers in columns, which place value should you start with?

• Hundreds

• Tens

• Ones

• Any place value

Can you subtract 5 from 2 without borrowing?

• Yes

• No

• Only if the numbers are small

• Only if the numbers are big

If you cannot subtract in the ones column, what should you do?

• Skip that column

• Borrow from the tens column

• Add the numbers instead

• Start over

When you borrow from the tens column, how many do you add to the ones column?

• 1

• 5

• 10

• 100