Number & Operations in Base Ten

Directions: Using the digits 1 to 9, place a digit in each box to make the answer closer to 200 than 300. Source: Marilyn Burns and Graham Fletcher

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the following problem true. Jenny has ? ? ? marbles. Her brother has ? ? ? marbles. Together they have ? ? ? marbles. Source:Chase Orton

Directions: Using the digits 0 to 9, at most one time each, place a digit in each blank to make the statements true. Barbara has ___ ___ ___ marbles. She gives her sister ___ ___ ___ marbles. She now has ___ ___ ___ marbles left. Source: Chase Orton

Directions: Using the digits 1 to 9, exactly one time each, place a digit in each box to make the sum as close to 1000 as possible. Source: John Ulbright and Robert Kaplinsky

Directions: Using the digits 1 to 4, at most one time each, place a digit in each box to make the largest possible product. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9, at most one time each, find two numbers that round to 500, and have the greatest possible difference. Source: Michael Wiernicki, Graham Fletcher, and Rachel Nelli.

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to create the smallest possible difference. Source: Graham Fletcher