 ## Time Twister

Directions: Using the digits 0 to 9, at most one time each, create three different times on the clocks where the span of the times are between 12 noon and 7 pm. How can you make the difference between the times the greatest? closest times together? Source: Jason Kornoely

## Adding and Subtracting Two-Digit Whole Numbers

Directions: Directions: Use the digits 0 to 9, at most one time each, to make a true statement. Source: Brian Errey

## Subtraction with Regrouping 2

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the difference equal to 39. Source: Chris Ignaciuk

## Create an Equation

Directions: Use only the digits 1 to 7, at most one time each, fill in the boxes to create a true equation. Source: Eric Appleton

## Sum to 1,000 – Two Addends

Directions: Arrange the digits 1-6 into two 3-digit whole numbers. Make the sum as close to 1000 as possible. Source: Ian Kerr

## Close to 1000

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

## Sums to 100

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to create the closest possible sum to 100. Source: Graham Fletcher

## Subtraction without Regrouping

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes so that you would not need to regroup when you subtract. Make sure your number is less than 63. Extension: Explain why you do NOT need to regroup using your number. Source: Chase Orton