Calculations appear on the screen every few seconds. This mental arithmetic starter provides pace to the start of the Maths lesson.

This lesson starter requires pupils to find the missing numbers in this partly completed arithmagon puzzle.

The calculations are obscured by ink blots. What do you think the calculations would look like if there were no blots?

A game in which players take turns to add a single-digit number to what is already in the calculator. The winner is the player who makes the display show 30.

Can you use the digits on the left of this clock along with any mathematical operations to equal the digits on the right?

Three consecutive numbers multiplied together give a given product. Pupils are asked to figure out what the numbers are.

Arrange the digits 1 to 6 to make a three digit number divided by a two digit number giving a one digit answer.

Begin with one, double it, double it again and so on. How many numbers in this sequence can you write down before the register has been called?

Find out which of the calculator keys is faulty from the given information. A mathematical puzzle requiring good problem solving strategies.

If each number in a sequence must be a factor or multiple of the previous number what is the longest sequence that can be made from the given numbers?

An activity involving a broken calculator which is missing the four button. Can you evaluate the given expressions without using the four?

Find four numbers from those given that add up to 999. How many different sets of four numbers can be found?

A clock face containing only the number 4. Can you make a clock face containing any other single number?

To find out whether a number is happy or not, square each of its digits, add the answers and repeat. If you end up with 1 the number is happy! How many other happy numbers can you find?

If six girls can plant 90 trees in a day. How many trees can ten girls plant in a day? The unitary method.

Pens cost 12p each, Pencils cost 9p each, Richard spent 72p altogether. How many pens and pencils did he buy?

Loosely based on the famous television show, how many questions cn you come up with for a given answer?

Check a student's homework. If you find any of the answers are wrong write down a sentence or two explaining what he did wrong.

The starter is a PowerPoint file containing a twenty question mental arithmetic test. It will advance from one question to the next automatically.

Which numbers when multiplied by the number of letters in the word(s) of the number give square numbers?

Find which numbers in a given list do not combine with other numbers on the list to make a given sum.

Divide one whole number by another on your calculator. If the answer has one digit repeated but no other digits you have a Noodlewhack.

How many ways can you write an expression for 100 which only uses the same digit repeated and any operations?

Work out the answers to the given calculations then add the answers together. There are three different levels of difficulty.

Use your calculator to find which whole number divided by another whole number gives a recurring decimal.

It is called Refreshing Revision because every time you refresh the page you get different revision questions.

Go around the roundabout performing each of the operations. Which starting point gives the largest answer?

Work out the cheapest way from Los Angeles to Las Vegas by choosing the best route and adding up the given numbers.

Work out which is the best scheme for Sid to choose for his summer bonus. One scheme involves a common misconception about percentages.

An activity involving a calculator which is missing the six button. Can you evaluate the given expressions without using the six?

Arrange the numbers on the grid of squares so that the totals along each line of three squares are equal.

Six students borrow £5000 to help pay for their university course. Calculate how much each student will have to pay back to the lender.

Find three numbers from those given that add up to 1000. How many different sets of three numbers can be found?

The Verruca Value of a word is the number of vowels multiplied by the number of consonants. How many words can you find with Verruca Value of 24?

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