Subtraction within 1,000 using an Open Number Line

This lesson teaches subtraction within 1,000 using an open number line. It covers breaking numbers into place values, the relationship between addition and subtraction, and visualizing subtraction with open number lines. The lesson also explores alternative subtraction methods and introduces the hopping up method to find differences.

What is the place value breakdown of the number 134?

• 1 hundred, 3 tens, 5 ones

• 1 hundred, 2 tens, 4 ones

• 1 hundred, 3 tens, 4 ones

• 1 hundred, 4 tens, 3 ones

In a part-part-whole diagram, if the whole is 10 and one part is 7, what is the other part?

• 2

• 3

• 4

• 5

How do open number lines help in subtraction?

• By multiplying numbers

• By dividing numbers

• By visualizing subtraction through hopping back

• By allowing addition of numbers

What is the result of 872 minus 346 using an open number line?

• 516

• 536

• 506

• 526

When subtracting 559 minus 234, which order of subtraction steps is correct?

• Subtract 4, then 200, then 30

• Subtract 30, then 4, then 200

• Subtract 200, then 30, then 4

• Subtract 4, then 30, then 200

What is the difference between 926 and 671 using the hopping up method?

• 245

• 255

• 265

• 275

Which method involves listing the smaller number at the bottom of the number line and hopping up?

• Hopping back method

• Hopping up method

• Direct subtraction method

• Addition method