The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
Here are two games you can play. Which offers the better chance of winning?
Use the differences to find the solution to this Sudoku.
Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?
A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?
Move your counters through this snake of cards and see how far you can go. Are you surprised by where you end up?
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
In this town, houses are built with one room for each person. There are some families of seven people living in the town. In how many different ways can they build their houses?
