Search Results For “mental maths”

Applying knowledge to add and subtract decimals mentally.

Adding tenths and hundredths. These are just like adding tens and units, but watch out for the decimal point!

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

Helping to decide whether it is best to work out the answer in your head or on paper.

All the questions on these pagers can be done mentally: the important part is explaining the method that was used.

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

Revision of adding several small numbers mentally, using strategies learned earlier.

Adding two 3-digit numbers mentally. Often it is best to start with the hundreds, then the tens and finally the units; this is the opposite order than when using written methods.

Further practice with mental addition using a variety of strategies to answer them quickly and correctly.

A summary of the main concepts involving multiplication, including multiplying by one and by zero and the relationship between multiplication and division.

Tips and hints on how to use mental methods to double and halve larger numbers, including 3-digit numbers.

Revision of the main concepts involved with the mental division of numbers. A reminder that a fraction is like a division sum.