Addition/Subtraction with Open Number Lines

What is the difference between 14 and 10?

• 4

• 2

• 5

• 3

If the whole is 10 and one part is 7, what is the other part?

• 3

• 4

• 5

• 2

What is 559 minus 234 using an open number line?

• 325

• 335

• 355

• 345

How many hops do you need to go from 671 to 926?

• 265

• 255

• 285

• 275

What is the result of 872 minus 346?

• 546

• 536

• 526

• 556