Maths Worksheet: Subtract a Single Digit (year 2)

subtract-a-single-digit-from-a-teen-pg1Once children are confident with subtracting single digits from single digits they can move on to subtracting from 2-digit numbers. This maths worksheet has a number line to help. Children can either start with the larger number and count back, or start with the smaller number and count on.

The next stage would be to start with the smaller number and know how many it takes to reach ten and then add on from there. E.g. 13 – 8. Start at 8 and know that add 2 will make ten. Continue from ten and add on the unit digit, in this case 3, to make 2 + 3 = 5. 13 – 8 = 5. A combination of knowing and counting on may well take place: many adults use this technique.

Subtract a single digit from a teen (pg1)

Coming Soon: Maths Worksheets on Money, Decimals and Bodmas

face1Next week we have a wide range of topics for our maths worksheets. There will be a neat page on counting money for year 1 children and a subtraction page for year 2.

There is also a great mini-investigation using small numbers which is ideal for year 3 children; this also has some ideas to follow, suggested methods of working and numbers to print out to help.

For older children we dip our toes into the wonderful world of BODMAS and the order in which calculations should be completed – excellent for those year 6 children who have finished their SATs.

Also coming soon is a tricky page of adding decimals mentally, a good test of knowledge of place value as well as knowledge of number bonds.

Year 3 maths worksheet: Multiplying by 10

multilkpy-by-ten-p1We’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 digits. It is easy to say ‘add a nought’ but this just doesn’t work later when decimals are multiplied by 10 and it doesn’t help to explain dividing by ten, when each digit moves one place to the right. Children can do simple multiplication by ten quickly, but they do need to understand what is happening.

Multiply by ten (p1)

Year 1 maths worksheet: Longer and shorter

longer-and-shorterThis page adds to our selection of measurement worksheets for year 1. It looks at two terms, longer and shorter,  and should be used in conjunction with plenty of discussion in the home. Ask questions such as ‘Which is the taller candle?’ and make requests, eg ‘Pass me the shorter pencil, please’ during the everyday activities you do with your children.

Longer and shorter

Year 4 Maths worksheet: Find fractions of numbers

year4-find-fractions-2This worksheet looks at the relationship between fractions and division. It is important that children understand that finding one half of a number is equivalent to dividing by 2, that finding one quarter of a number is the same as dividing the number by 4 and to find one fifth is equivalent to dividing by 5. Plenty of practice is needed with this before children go on to find, for example, two fifths, or three fifths of numbers.
Most of these questions should be calculated mentally, although rough jottings may help. It might be a help to remember that finding a quarter of a number can be found by halving and then halving again. A fifth can be found by dividing by ten and doubling the answer, although if the number is not divisible by 10 it might be easier to do a quick pencil and paper calculation.

Find fractions of numbers (p2)

Year 5 number worksheet: recognise tests of divisibility for multiples of 9 and 10

divisible-by-9-and-10This maths worksheet is another in our set on rules of divisibility. Knowing these rules will really help children in their maths up to the end of High School and beyond.

The rule for dividing by 10 is the easiest of them all:

If the whole number ends in a 0 then the number is divisible by 10.

The rule for 9 is also easy, but it does require a little adding up:

Add up all the digits. If the total of the digits is divisible by 9 then the whole number will be.

Example: 2304

2 + 3 + 0 + 4 = 9

So 2304 is divisible by 9.

Example: 9630

9 + 6 + 3 + 0 = 18

18 is divisible by 9 therefore 9630 is also divisible by 9.

The second part of the worksheet asks which numbers are divisible by both 9 and 10. Probably the best way to do this is to ignore any numbers that do not end in a zero, then add up the digits of the rest and see if they come to a multiple of 9.

If they do, and the last digit is a zero, then they are multiples of both 9 and 10. Easy!!

Divisible by 9 and 10

Coming Soon: Maths Worksheets on Fractions, Divisibility and Multiplication

jpg-sun701Half term is coming to an end and the sun has come out at last! During the next week we will have a great range of new maths worksheets coming out to match the lovely weather. Something for all year groups here, including a measurement page for Year 1, number squares for Year 2, multiplying by 10 for year 3, and fractions for year 4. We also have a page on rules for divisibility for 9 and 10, just right for Year 5. Nothing for Year 6 this week, but they deserve a break after all those tests and are probably gearing themselves up for rounders tournaments, cricket matches, school fetes and a long break before High School.

Maths worksheet: Long division p2

long-division-2The second in our series of long division pages. These are very hard for primary school children and should not be attempted until they have a good knowledge of tables, multiplying and subtraction.

Example: 789 divided by 36.

First carry out an estimate of the answer. I think 789 divided by 36 is about 20.
Then proceed using these steps:
1. How many 36s in 78?
2. 2 x 36 is 72.    3 x 36 is 108 which is too many, so it must be 2.
3. Put the 2 in the tens column above the answer.
4. Place the 72 below the 78 and subtract.
5. 78 – 72 is 6.
6. ‘Bring down’ the 9 to make 69.
7. How many 36s in 69.
8. By trial and improvement and some rough work multiplying 36 by my estimated numbers I find that 36 x 1 = 36.
9. Place the 36 under the 69 and subtract.
10. The remainder (33) must be less than the original number you are dividing by.

Long division (pg 2)

Mistakes can make me feel better!

errorWith well over 500 pages and a number of games I’m sure that mathsblog has made some errors that nobody has yet spotted. If you find anything please contact me and I will do my best to correct it as soon as possible. Meanwhile, I quite enjoyed seeing this little mistake in a published book on counting – it just goes to prove that we all slip on banana skins sometimes!

Thanks to failblog for this contribution (not suitable for children).

News: Cricket, a great game for maths!

cricketCricket – we love it!
It’s going to be one of the best summer’s ever for cricket fans. Already we are into the West Indies tour. Later we have the ICC World Twenty20 Competition, quickly followed by the latest Ashes series.
In schools, cricket is expanding again with the ‘Chance to shine’ (C2S) project, the biggest school sport-development initiative ever! And not least, cricket must be the best sports ever for maths! It abounds with maths, from adding a team’s score, working out runs per wicket, averages for batsmen and runs per over needed to win a one day game.
And don’t forget as a die has six sides it is ideal for designing simple little cricket games – just ask your year 6’s to have a go now that SAT’s are over.