Place value

  • BT.. Eat your heart out
    problem

    BT... Eat Your Heart Out

    Age
    16 to 18
    Challenge level
    filled star filled star empty star

    If the last four digits of my phone number are placed in front of the remaining three you get one more than twice my number! What is it?

  • Binary Squares
    problem

    Binary Squares

    Age
    16 to 18
    Challenge level
    filled star filled star empty star

    If a number N is expressed in binary by using only 'ones,' what can you say about its square (in binary)?

  • Basic Rhythms
    problem

    Basic Rhythms

    Age
    16 to 18
    Challenge level
    filled star filled star empty star

    Explore a number pattern which has the same symmetries in different bases.

  • Learn About Number Bases
    article

    Learn About Number Bases

    We are used to writing numbers in base ten, using 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Eg. 75 means 7 tens and five units. This article explains how numbers can be written in any number base.
  • Palindromes
    article

    Palindromes

    Find out about palindromic numbers by reading this article.
  • Adding with the Abacus
    article

    Adding With the Abacus

    Nowadays the calculator is very familiar to many of us. What did people do to save time working out more difficult problems before the calculator existed?
  • Pupils' recording or pupils recording
    article

    Pupils' Recording or Pupils Recording

    This article, written for teachers, looks at the different kinds of recordings encountered in Primary Mathematics lessons and the importance of not jumping to conclusions!
  • Ten-frames Games
    article

    Ten-Frames Games

    These games use ten-frames to develop children's 'sense of ten'.
Displaying 111 - 120 of 130