Place Value, Integers, Ordering & Rounding

Nice or Nasty

Stage: 2 and 3 Challenge Level: Challenge Level:1

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

Dicey Operations

Stage: 3 Challenge Level: Challenge Level:1

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

Always a Multiple?

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Think of a two digit number, reverse the digits, and add the numbers together. Something special happens...

Making Sense of Positives and Negatives

Stage: 3

This article suggests some ways of making sense of calculations involving positive and negative numbers.

Legs Eleven

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

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?

How Many Miles to Go?

Stage: 3 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

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?

Farey Sequenceslive

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

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

Difference Sudoku

Stage: 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Use the differences to find the solution to this Sudoku.

Place Your Orders

Stage: 3 Challenge Level: Challenge Level:1

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

Add to 200

Stage: 3 Challenge Level: Challenge Level:1

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

Forwards Add Backwards

Stage: 3 Challenge Level: Challenge Level:1

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

Number Lines in Disguise

Stage: 2 and 3 Challenge Level: Challenge Level:2 Challenge Level:2

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

Place Value, Integers, Ordering and Rounding - Short Problems

Stage: 3 and 4

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