Number & Operations in Base Ten

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to make a product that’s as close to 500 as possible. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to make two different true number sentences: one with a product that’s less than 500 and one with a product that’s greater than 500. You may reuse all the digits each product. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, place a digit in the boxes to make a difference that is as close to 329 as possible. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 exactly one time each, place a digit in each box two times: once to make a sum that is greater than 700 and once to make a sum that is less than 700. You may reuse all the digits for each sum. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make two different pairs of three-digit numbers that form a true number sentence. You may reuse all the digits each difference. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to make the greatest possible three-digit number that still rounds (to the nearest hundred) to 500. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to make two different three-digit numbers that round (to the nearest hundred) to 500. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 exactly one time each, place a digit in each box to make the difference as close to 200 as possible. Source: Tara Trifiletti and Jessica Goree

Directions: Use the numbers 1-9 at most once each to make this a true subtraction equation. What is the greatest difference? What is the least difference? Source: Ellen Metzger

Directions: Using the digits 1-9 at most one time each, find the closest difference to 200. Source: Jessica Goree