Skip to main content
University of Cambridge logo white
Home

Our Primary and Secondary
Advent calendars are back!

Main navigation

  • Teachers
    • Early years
    • Primary
    • Secondary
    • Post-16
    • Professional development
  • Students
    • Primary
    • Secondary
    • Post-16
  • Parents
    • Early years
    • Primary
    • Secondary
    • Post-16
  • Problem-Solving Schools
    • What is the Problem-Solving Schools initiative?
    • Becoming a Problem-Solving School
    • Charter
    • Hub
    • Resources and PD
  • Events
  • About NRICH
    • About us
    • Impact stories
    • Support us
    • Our funders
    • Contact us

Or search by topic

Number and algebra

  • Properties of numbers
  • Place value and the number system
  • Calculations and numerical methods
  • Fractions, decimals, percentages, ratio and proportion
  • Patterns, sequences and structure
  • Coordinates, functions and graphs
  • Algebraic expressions, equations and formulae

Geometry and measure

  • Measuring and calculating with units
  • Angles, polygons, and geometrical proof
  • 3D geometry, shape and space
  • Transformations and constructions
  • Pythagoras and trigonometry
  • Vectors and matrices

Probability and statistics

  • Handling, processing and representing data
  • Probability

Working mathematically

  • Thinking mathematically
  • Mathematical mindsets

Advanced mathematics

  • Calculus
  • Decision mathematics and combinatorics
  • Advanced probability and statistics
  • Mechanics

For younger learners

  • Early years foundation stage

Solution

26273

Problem
Three neighbours Back to problem
First name
Leonardo Stamp
School
Hymers College Junior School
Country
England
Age
11
Filename
LBuS80-If you take the middle number and times it by three that is the answer because the first number is smaller than the middle one and the last number is bigger than the middle so the blob on the last one .docx

Footer

  • Sign up to our teacher newsletter
  • Technical help
  • Accessibility statement
  • Contact us
  • Terms and conditions
  • Links to the NRICH Twitter account Twitter X logo
  • Links to the NRICH Facebook account Facebook logo
  • Links to the NRICH Bluesky account Bluesky logo
NRICH is part of the family of activities in the Millennium Mathematics Project.
University of Cambridge logo white
Nrich logo white