Know all of the halves for multiples of 100 up to 1000.
Know all of the doubles of multiples of 5 up to 100.
Know halves of even numbers below 100.
Know halves of all numbers below 100.
Know all doubles and halves of multiples of 10 up to 1000.
Know how to find halves of ThHTU numbers.
Know how to double ThHTU numbers.
Know how to find a number multiplied by 4 by doubling and doubling again.
Use doubling and halving from known facts eg x25 ÷4
Use doubling and halving from known multiplication facts beyond 10×10. Eg if you know x4 x16 can be worked out by doubling then doubling again or by doubling x8.
Doubling and halving numbers
Half and double 1 place decimal numbers.
Half and double 2 place decimal numbers.
Know how to double and half a negative number.
Area of a Trapezium – song
FRACTION of a NUMBER
PERCENTAGE – change a fractions into Percentages
Boom! Boom! POW!
Click HERE to do some mental maths tests on Primary Online – interactive too [links on the left]
PITCH AND EXPECTATIONS – as mentioned in class on Friday 19th October 2012 – download and look at the SATS-type of questions.
Check also the ‘Numeracy Interactive’ section on the sidebar for many new links – to learn in a FUN way! Some links can also be found on the FUN section.
Practise your times tables on this link. Match the statement with the answer. Have fun! You have the option to time yourself or to use the ‘relaxed mode’ -without the timer.
Area and Perimeter
Play ON THIS LINK with elastic bands and colours and learn more about area and perimeter! – click on the red links – all links will open in a new window.
On THIS LINK you can play a great game of Battleships! Choose either: measures, decimals, whole numbers or fractions. Have fun!
Maths SITE to practise more maths!
For practising THE GRID METHOD click the link in red. This is a FABULOUS link!
Addition – 3 digit numbers Column Method
Partitioning – 3 digits
Subtraction – Column Method
Multiplication – Grid Method
Division – long division, the Chunky Method
Division – long method and short method – with a remainder
Multiplication – Grid Method – money
AREA of COMPOUND shapes – Compound shapes are more than one shape put together – like in this video.
Click HERE to visit an interactive site that will help you understanding Perimeter and Area even more. This is a GREAT site!
Here is another site to explore area.
This SITE has a geoboard for you to explore shapes too.
If your shape is a square, it’s easy as you times 4x the length e.g. 4x6cm [all the sides will be e.g. 6cm if it is a square].
Square – Perimeter=4x6cm
A rectangle has 2 opposite sides the SAME length e.g. 2 sides [width] = 2 cm each and 2 sides [length] might be 4cm each.
So, for this rectangle Perimeter = 2x [ 2cm+4cm]
P = 2x 6cm
[long way: 2cm + 2cm+ 4cm+4cm = 12cm]
Polygons: [closed plane shapes with at least 3 straight sides and angles]
e.g. regular hexagon = 6 sides and all sides will be the same length
SO: Perimeter = 6 x 8cm
P = 48cm
IRREGULAR hexagon [6 sides, but the sides are NOT the same lenght]
Perimeter = 4cm + 3cm + 6cm+ 7cm + 2cm + 5cm
Great game! The target in this case is 50. Using the numbers in the grid, I can try and make 50. For example:
2 x 25 = 50
13 + 27 + 10 = 50
(8 x 5) + 10 = 50
100 Ã· 2 = 50
27 + 33 â€“ 10 = 50
and so on. Note that I could not have done: 15 + 15 + 15 + 5 = 50 because 15 appears only once in the grid. However, (5 x 5 ) + 25 = 50 is valid because 5 appears twice in the grid.
Times by 10, 100, 1000 and Ã·10, 100, 1000
Click HERE for Numeracy Abacus Y5 to go through activities you might be interested in to help you understanding Maths!
Do you enjoy Sudoku? See the Numeracy-Interactive section for the ONLINE link! Have fun!
A bar line chart – bars, but as lines
Bar Chart – bars, they DO NOT touch Â 13837 X [Your age] x 73 = ? Try it out on everyone you know. Check the results each thime. Example: 13837×9 [your age] x 73 = ? Check! Try more out. Practise your fraction-knowledge Square numbers = 1 [1×1],4 [2×2],9 [3×3],16 [4×4],25 [5×5],36 [6×6],49 [7×7], 64 [8×8], 81 [9×9], etc. Can you see how 10 mm = 1 cm?
How many 2D shapes do you know? Do you know their properties? e.g. how many sides, how many lines of symmetry, is it a polygon [closed shape withÂ 3 or more lines], is it a quadrilateral [shape with 4 sides], etc?Â
Click the image for a larger, clearer view
Â Click the image for a larger, clearer view
Divide by 10/100/1000
Take 30 seconds to work this out! See more on 30secondchallenge.com