Search Results For “doubling and halving to 20”

An atlas with time zones is needed for the first activity and there are line graphs on time to interpret.

When answering these problems say which operation is needed and whether it can be done mentally, on paper or with a calculator.

Complete a variety of number sequences and say what the rule for each sequence is. Some negative number work as well.

Great idea for collecting data which can then be used to make lists and show results as a graph.

Sets of quick mental arithmetic questions. Subtracting single digits and 2-digit numbers.

Here we have some word problems and they are all about the time!

Put the numbers in the boxes so that the total of the row across adds up to the same as the total of the column down. Several ways to do this, leading to further investigations.

Introducing the decimal point to separate pounds from pence.

Great set of 'space' pages to test how quickly the two, five and ten times tables are known.

Three boxes and 20 buttons. How many different ways can the buttons be put in the boxes so that each box has an even number?

The very simplest forms of magic squares and some ideas on how to turn them into colour patterns.

Fill in the puzzle so that every row, column and diagonal contains the numbers 1 to 4.