Number (addition and subtraction): Hungry Hummingbird

Further Challenges

• If a bee hummingbird, visited 11,000 different flowers over the course of a week, how might you adjust your original list of numbers? What is the least number of changes that you can make to your original list?
• Dicey Operations in Line is a fabulous game on the Nrich website that encourages discussion of place value and mental calculations whilst thinking strategically. You can easily adapt Game 1 by adding three four-digit numbers to get as close as possible to 10,000.