## Hundreds Chart Missing Numbers

### Hundreds Chart Missing Numbers

Some children love the Hundreds Chart Missing Numbers activities and they are also very useful. There are lots of places on the web where you can find them.  I have chosen some websites here that do a bit more.

### Reversed Hundreds Chart With Missing Numbers

What I also wanted was to be able to have a reversed hundreds chart. I was trying to figure out a way to create using Excel but although I could create the numbers, I couldn’t figure out how how to get the missing numbers.

Then I found this site.  It gives lots of different options.

You can have straightforward missing numbers and there are lots of fonts and colours to choose from. Then you can just click randomise to give you lots of different grids using the same options.

However, it is the “Edit Numbers” bit that really excites me!

Click on that and you get this pop up:

As you can see, you can use negative numbers and decimals and even change the increments. So by starting at 100 and setting the increments at -1, I have what I am after.

https://www.senteacher.org/printables/Mathematics/37/HundredSquarePrinter.html

### Multiplication tables

4x Table

By starting at 4 and choosing an increment of 4, I can take the 4 x table all the way to 100 x 4.

One thing that struck me by looking at it, in this format, was that I realised why the 4 x table has the last digit 4,8,2,6,0, pattern running through it.  4×5=20 and so you are adding 20 to 2 to get to 24, 20 to 8 to get to 28, 20 to 12 to get to 32 and so on.

What else might your children notice?

In the table are the numbers: 12, 112, 212, 312.  Would 412 be there if we carried on? Why or why not?

11 x table

What do you notice here?

Take a look at any 3-digit answer where the two outside numbers add up to the number in the centre.  In all these cases the two outside numbers will be the number of times 11 goes into the three-digit number.

For example,  594, 5+4=9,   and 54×11=594

If you have a 3-digit number where the two outside numbers do not add up to the number in the centre, then take away 1 from the first digit in order to work out how many times 11 goes into the whole number.

For example, 836,   8+6=14, so take 1 away from the first digit,  76×11=836.

You can use this information to help you multiply two-digit numbers by 11.

For example 35,   add 3 and 5 together to make 8 and your answer will be 358.  so 35 x 11 equals 358.

For example 38,  add 3 and 8 together to make 11 and your answer will be 418.   What you did here was to put the 11 in between these two numbers, but then to add Decrease the number in the hundreds column by 1. After all, multiplying by 11 is just multiplying by 10 and then multiplying by 1.By doing this as a column addition and you’ll see what I mean.

380 +

38

Take a look at some of the other tables and see what else you might notice.  Let me know what you spot in the comments area below.

Also, see How to teach multiplication tables

### Some other websites which allow you to print off a free hundreds chart.

HomeSchoolMath.net

https://www.homeschoolmath.net/worksheets/number-charts.php

On this page, you can make a variety of pre-prepared charts but towards the bottom of the page there is also a “Number Chart Worksheet Generator”.

This allows you to create hundreds charts which skip numbers and you can also choose to highlight every, for example, 5th square.  In this example, I have chosen to start at 3, make my increments 3, and hight every 2nd square.

The obvious thing it shows is the 6 x table, but what else can you see?

I found myself adding up the digits of the answers.  What do you think I discovered?

### Other types of hundreds charts

One website I enjoy using is http://www.math-aids.com/ . you can use it for free which I did for many years but then decided that there is so much on here to explore that it was really worth paying the subscription fee. This gets rid of all the adverts and gives the site a much cleaner feel.  I think the downloads are quicker as well.

Here are some of the other hundreds charts you can get.

Make puzzles for your kids to complete

http://members.math-aids.com/Hundreds_Chart/Puzzles.html

### Create pictures by colouring in certain numbers

http://members.math-aids.com/Hundreds_Chart/Pictures.html

### Create a hundreds chart showing whether the round up or down.

http://members.math-aids.com/Hundreds_Chart/

### Create letters of the alphabet.

Is this useful?  Let me know any ideas of how you might use it.

The one thought I had would be to get children to add up the coloured numbers and see which were the most or the least.

### Some games to play using the hundreds chart

Have a look at this site for some ideas of games to play with hundreds charts.

https://www.thoughtco.com/hundreds-chart-2312157

I would love to find other sites with more ideas on.

Please let me know if you find any.

### Finally, you might want to look at these Youtube videos featuring hundreds charts

Here is a basic introduction to the hundreds chart.

Some basic patterns from Khan Academy

Adding and subtracting by 1 and 10 and how and why to use puzzle parts of the hundreds charts.

Some nice graphics on this video

Number game using puzzle pieces.

Subtraction on the 100s chart

Looking at multiples in the hundreds chart.

## How to teach multiplication tables

### How to teach multiplication tables

At some point, every parent is probably considering how to teach multiplication tables.

As both a teacher and a tutor, this was something I gave a considerable amount of thought about it.

There are lots of methods – and you will want to try different methods with different children. I suggest you bookmark this page so you can come back to it (Control +D). Don’t keep pushing a method they hate and don’t try to move too fast, especially if they are under 7. You will, no doubt, come across parents who are delighted that their children know their tables at an early age, but children are all different. The important thing is not to put them off. It really is a case of slow and steady wins the race.

(I have quite a few links on this page, some of them go to Amazon and if you purchase through these links I will receive a small percentage – but it won’t affect the price you pay. I hope you don’t mind. It helps will the costs of running this site.)

I shall divide this into very rough age sections.

### 6-7 years olds

Here I would concentrate on playing games.

Try creating some cards with your child to use for matching games. They don’t need to be playing card size.

Let your child choose a theme – eg Star Wars, dolphins, whatever they like. Then take one of the tables and create a few cards to match.

e.g.

I have done this on PowerPoint – which makes it really easy to get the pictures from the clipart section and you can reprint anytime you want.

You could start out by just printing two sets of up to 5 x 2 and match them, counting the dolphins, ordering them and telling stories – 2 dolphins were swimming in the sea when they saw two more, so they swam over to see them. Now there were four.

Also, don’t feel you have to be doing everything at once. Try picking a few cards, eg 2 x 6, 3 x 3, 4 x 2, 5 x 5, 3 x 10, and use those to put in order, match, and play snap or war.

Some useful multiplication songs.

Another version of the same song but with the multiplier coming second.

https://youtu.be/L2wBEDDiCzQ

Click on this link to find more times tables created by Reggae Beatz.

Click on this link for more multiplication songs by Jack Hartmann

### 7-9 year olds

This is when most of the learning of tables should take place so that your children are ready for more complex multiplication and division calculations.

Fortunately, there are lots of things you can do and resources available.

Carry on playing the games suggested above but introducing new sets of cards or buy some multiplication tables games cards.

Choose a game board you have at home and write some cards for it.  For instance, if you have a trivial pursuit board you could say if you land on a yellow you have to answer a 2 times question.  If you have a monopoly board you could replace the chance and community chest question with these cards – use the money to help you answer the questions.  The object of the game could be to collect the most properties, forget about houses and hotels when you start playing.

These cards could be useful to use – SmartyMaths Times Table Flash Cards Set of 144

Here we have an interesting game you can play with an ordinary pack of cards. It’s called Tables Combination.

Try the Maths trainer at https://www.mathsisfun.com/numbers/math-trainer-multiply.html .  Start with tables already know and do a minute at a time.  Change the question cut-off to 1 day otherwise children get really disheartened. Once they know tables well try introducing the 8-second cut-off.  Some children love this – others don’t!!

Multiplication.com http://www.multiplication.com/games/all-games has a great set of arcade type games. For a mixture of tables try Granny Prix, to pick individual tables or any mixture try Pirate Multiplication but those are just my favourites. Let your child choose their own.

### 10-15 year olds

At this age, if children haven’t learnt their tables they are often really fed up of people trying to make them learn them so it is really important to try and do things which engage their interest.

Multiplication.com http://www.multiplication.com/games/all-games is popular.

This Romany method really grabs some older children and adults who have struggled – and a useful step towards learning them. Younger children are much less likely to take to this in my experience.

Learn your times tables fast This video explains which are the hardest few sums to learn and makes it feel easier to accomplish the task by breaking it down.

### Affirmations

Mindset is so important – try using these affirmations and others you make up.

Everday in every way – I am enjoying maths more.

I am an amazing mathematician!

Each day I learn something new.

I can do anything.

I and my family are good at maths.

I didn’t know I was good at maths but I am!

I hope this helps!