Maths Grids
numeracy  multiplication grids  samples  practice  other
grids
10x10 Grid: 
Best time = 1:50 (13 Aug 2011 & 11 Feb 2012)
2nd 3rd best time = 2:02 (6 Aug 2011) 
10x10 Grid, 212x: 
Best time = 1:58 (15 Sep 2012)
2nd best time = 2:07 (8 Sep 2012)
3rd best time = 2:24 (20 Mar 2013) 
Numeracy
It's important for people to have good basic numeracy skills, including
arithmetic and multiplication. Being proficient with these has a flowon
effect to other maths where it helps solve problems faster, leading
to less frustration and a better sense of achievement.
Being able to
quickly recall one's times tables means attempts to
tackle problems are not bogged down with working out the numbers
rather than working out how to solve it. It also saves a huge amount
of time in exams.
Multiplication Grids
A
great way to practice times tables is to fill in a multiplication
grid and time yourself (or get someone to time you). Try to improve
your time each day.
The simplest grid is 10 x 10 and has the numbers 110 along each side
in numerical order, but to encourage the ability to recall the
times tables in any order  as required in everyday problems 
the maths grids in the PDFs below have the numbers in random order.
A good time is under two and a half minutes, and should be achievable
for any intermediate school aged student with a bit of practice. An excellent time is under two minutes.
For a greater challenge a 10 x 10 grid can be used but replacing 1 and 10 with 11 and 12.
Alternatively a random 12 x 12 grid can be used. Good
is under four minutes, excellent is under three minutes. 
Samples
PDFs are available with practice grids, two grids on each page. Each
PDF has a total of 14 grids.
These grids were created in OpenOffice using a Calc spreadsheet that
automatically generates the random numbers for the grids. New random
numbers are generated every time the file is opened. (Any change to the
file will also cause the numbers to update  for example, hitting Delete
in an empty box.)
Practice
If you're having trouble with just one particular number in your times tables you can practice just that times table with these files. Each times table (up to 12x) has its own page, so you can print out the ones you need the most practice with.
The spreadsheet numbers are randomised every time the file is opened or changed.
Other Grids – Addition and Subtraction
Times tables are not the only maths skill that can be practiced with
maths grids. Arithmetic can also be practiced with addition and subtraction
grids. The random numbers in these grids also include negative numbers. Answers are included for each of the 7 addition and 7 subtraction grids in the PDF.
For more grids use the Open Office file. Every time the file is opened new random numbers are generated.
