Search Results For “number and place value”

Add twenty and take one is much quicker than trying to add nineteen. But not always!

Use the numbers in the octagon to create and answer subtraction questions using multiples of 10 and decimals.

Doubling 2-digit numbers and halving 3-digit numbers mentally.

Some people like to start doubling with the units, others like to start with the tens. It doesn?t matter as long as the method is fast and accurate.

Remember to move the digits two places to the right to divide by 100.

We return to an important concept again: the relationship between multiplication and division.

Understanding and using factors of numbers can make mental multiplication easier.

Tips and hints on using a calculator, including negative numbers and recurring decimals.

Looking at the properties of cuboids, prisms and pyramids.

Nets of cubes and pyramids and making 3D shapes from cubes. Using a pinboard to make 2D shapes that obey set rules.

More nets of 3D shapes which can be cut out and folded to make the shapes.

Net of a 12 sided shape, more on nets for a cube and some ideas for tangrams.