Challenge Level

There are nasty versions of this dice game but we'll start with the nice ones...

Challenge Level

Who said that adding, subtracting, multiplying and dividing couldn't be fun?

Challenge Level

Take any four digit number. Move the first digit to the end and move the rest along. Now add your two numbers. Did you get a multiple of 11?

Challenge Level

How many more miles must the car travel before the numbers on the milometer and the trip meter contain the same digits in the same order?

Challenge Level

There are lots of ideas to explore in these sequences of ordered fractions.

Challenge Level

Use the differences to find the solution to this Sudoku.

Challenge Level

Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?

Challenge Level

By selecting digits for an addition grid, what targets can you make?

Challenge Level

What happens when you add a three digit number to its reverse?

Challenge Level

Some of the numbers have fallen off Becky's number line. Can you figure out what they were?

A collection of short problems on place value, integers, ordering and rounding.

Challenge Level

Try out some calculations. Are you surprised by the results?