Posts tagged as "multiply"

Posted by Peter on 18th May 2011

Multiply by one and ten

We often presume that much of what young children have to do in maths is self evident and easily understood by them. However, often this is not the case, especially if children have missed some time or not had enough practice to consolidate their learning. Here we have a simple exercise to just check that […]

Posted by Peter on 23rd August 2010

Year 4 maths worksheet: multiples of 10

The summer holidays are drawing to a close so what better for all those children just entering year 4 than a nice little mental arithmetic page. This page looks again at multiplying 2-digit multiples of 10 by a single digit. Dead easy if tables are known. If tables are not known this becomes much more […]

Posted by Peter on 29th July 2010

Maths worksheet: More multiplying decimals by 10 and 100

Here we have another page on multiplying decimal fractions by 10 or 100. The method used today is to move each number one place to the left when multiplying by ten and two places to the left when multiplying by 100. The decimal point does not move. I seem to remember moving decimal points around […]

Posted by Peter on 24th June 2010

Maths worksheet: Multiply decimals

There are some definite dos and don’ts when it comes to multiplying decimals ‘in your head’. To multiply by 10 move each digit one place to the left, including tenths to the units, if necessary. To multiply by 100 move each digit two places to the right. The big don’t is to think that ‘add […]

Posted by Peter on 14th June 2010

Year 4 maths worksheet: Multiply multiples of 10

This page is an excellent illustration of how knowing ‘tables’ and understanding place value can make other maths much simpler. These questions are all multiplying multiples of ten by a single digit. If you know that 7 x 8 = 56 then 70 x 8 can be done ‘in your head’ very quickly. probably the […]

Posted by Peter on 5th June 2009

Year 3 maths worksheet: Multiplying by 10

We’re back on to the idea of multiplying a whole number by ten, probably one of the most important concepts in primary maths. Of course, by now we all know that each digit moves one place to the left and a zero is placed in the units, acting as a place holder for the other […]

Posted by Peter on 9th May 2009

Multiply by 9 mentally (1)

You can multiply most 2-digit numbers by 9 in your head. The most efficient way is to multiply the number by ten and then subtract the number. For example: 45 x 9 First of all multiply 45 by 10 which is 450. Then subtract 45 from 450 which is 405. This maths worksheet shows how […]