# New

## Year 3 Multiplication Wheels and Number Machines

One worksheet which uses multiplication wheels which is generally easier and more fun for children to fill in that “square” times tables.

Also included here are three Number Machine workouts which use three steps of maths targeted at Year 3, for example an addition, a multiplication and another addition. These are great fun and introduce children to working out multiple-step answers:

Year 3 Multiplication Wheels

Year 3 Number Machines – Worksheet 1 – e.g. uses addition, subtraction and multiplication with an input number and an output number

Year 3 Number Machines – Worksheet 2 – e.g. uses addition, subtraction and multiplication with an input number and an output number

Year 3 Number Machines – Worksheet 3 – e.g. uses addition, subtraction and multiplication with an input number and an output number

## Year 3 Negative Numbers

Here are three worksheets which use a number-line and thermometer to help introduce and secure the basics of negative numbers:

Year 3 Negative Numbers – Worksheet 1 e.g. 1 – 2 = -1

Year 3 Negative Numbers – Worksheet 1 e.g. 1 – 6 = -5

Year 3 Negative Numbers – Worksheet 3 e.g. “What will the temperature be if it warms by two degrees?”

## The Beauty of Odd Factors

Remember that the factors of an odd number are all odd.

For example the factors of 15 are: 1, 3, 5 and 15.

If we look at a bigger number like 2,469 the factors are: 1, 3, 823, 2469.

And just to prove the point, for a huge number like 24,648,021 the factors are: 1, 3, 9, 53, 159, 477, 51673, 155019, 465057, 2738669, 8216007, 24648021.

Phew!

## How long will it take me to walk 6km?

A Ninja Maths Master should be able to estimate how long a walk will take

The average ten year old child will walk at about 4km per hour.

With this knowledge a Ninja Maths Master should be able to work out that 6km is one and a half times 4km, so the time taken will be one and a half times one hour which is one and a half hours!

Ask how long it would take to walk 40km. The answer will not be ten hours. Why?

## New & Free: Year 4 Apples & Oranges (Multiplication & Addition)

Here are six worksheets which require multiplication (times tables) and addition to solve questions such as “If an apple cost 14p, how much change will you get from the shopkeeper if you buy five apples with a £5 note?”

Year 4 Apples & Oranges – Worksheet 1

Year 4 Apples & Oranges – Worksheet 2

Year 4 Apples & Oranges – Worksheet 3

Year 4 Apples & Oranges – Worksheet 4

Year 4 Apples & Oranges – Worksheet 5

Year 4 Apples & Oranges – Worksheet 6

## “But Daddy, you can’t divide five in half”

Today my daughter had an issue carrying five plates from the kitchen onto the dining table

There were five heavy plates in the kitchen and I asked my daughter to carry them onto the dining table. She said they were too heavy so I said to carry half then come back and carry the rest.

“But Daddy, you can’t divide five in half”.

Of course she was right. She couldn’t carry two and a half plates and then come back for the other two and a half.

Luckily she knew what I meant and after finding it really funny, then thinking about it a little longer, I decided I need a few more Ninja Master lessons in the practical application of mathematics in the real world and how language can sometimes be ambiguous, or at least reliant on the other person to “get what you mean” in exactly the same way that computers can’t.

## Free Year 4 Time & Clock Calculation Worksheets

Seven new and free Time & Clock calculation worksheets for Years 4 and 5 which include time addition & subtraction as well as converting into 24hr notation

## Year 4 Time & Clock Calculations: Free Worksheets

Year 4 Time & Clock Calculations – Worksheet 1, e.g. adding time to a digital clock

Year 4 Time & Clock Calculations – Worksheet 2, e.g. adding time to a digital clock

Year 4 Time & Clock Calculations – Worksheet 3, e.g. working out what time trains and planes arrive

Year 4 Time & Clock Calculations – Worksheet 4, e.g. working out what time trains and planes arrive

Year 4 Time & Clock Calculations – Worksheet 5, e.g. converting plain English times such as “A quarter to eight in the evening” into AM/PM

Year 4 Time & Clock Calculations – Worksheet 6, e.g. converting plain English times such as “A quarter to eight in the evening” into AM/PM

Year 4 Time & Clock Calculations – Worksheet 7, e.g. working out 24hr clock notation for morning and evening times