Addition and subtraction

problem

Two Number Lines

Age

7 to 11

Challenge level

Max and Mandy put their number lines together to make a graph. How far had each of them moved along and up from 0 to get the counter to the place marked?
problem

Cows and Sheep

Age

7 to 11

Challenge level

Use your logical reasoning to work out how many cows and how many sheep there are in each field.
problem

Lengthy Journeys

Age

7 to 11

Challenge level

Investigate the different distances of these car journeys and find out how long they take.
problem

Fingers and Hands

Age

7 to 11

Challenge level

How would you count the number of fingers in these pictures?
problem

Sort Them Out (2)

Age

7 to 11

Challenge level

Can you each work out the number on your card? What do you notice? How could you sort the cards?
problem

Journeys

Age

7 to 11

Challenge level

Investigate the different distances of these car journeys and find out how long they take.
problem

Sums and Differences 1

Age

7 to 11

Challenge level

This challenge focuses on finding the sum and difference of pairs of two-digit numbers.
problem

Sums and Differences 2

Age

7 to 11

Challenge level

Find the sum and difference between a pair of two-digit numbers. Now find the sum and difference between the sum and difference! What happens?
game

First Connect Three for Two

Age

7 to 11

Challenge level

First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.
problem

Folded Number Line

Age

7 to 11

Challenge level

When I fold a 0-20 number line, I end up with 'stacks' of numbers on top of each other. These challenges involve varying the length of the number line and investigating the 'stack totals'.