This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
Try out these calculations. Are you surprised by the results?
In each of these games, you will need a little bit of luck and your knowledge of place value to develop a winning strategy.
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?
By selecting digits for an addition grid, what targets can you make?
What happens when you add a three digit number to its reverse?
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?
There are lots of ideas to explore in these sequences of ordered fractions.
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?
Use the differences to find the solution to this Sudoku.
You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.
