Monday,+July+26

• How will you organize your work to find the answer? (strategy) • How will you know that your answer is correct? • How will you know that it is the only possible answer? • If there is more than one answer, how will you know you have them all? • What if...?

Use the digits 1, 2, 3, 4, 5, 6, 7, 8, and 9 to form two three-digit numbers and their sum, another three-digit number.

_ _ _ + _ _ _ = _ _ _