Y2 addition worksheet: find the missing number

adding-3-numbers-2Sometimes sums can prove to be more difficult than they first appear. For many children this is the case with the kind of questions on this worksheet which require finding the missing number. Why is this difficult? Because it involves carrying out two processes, when children are used to only having to do one thing to find the answer. Whilst it is an addition number sentence, subtraction is needed to work out the answer.

There are several methods which could be used to find the answer, but the most efficient is probably to:

1. Add the two single digits

2. Subtract that total from the answer.

Another way is to start with the answer and find it on the number line, then hop back the first number, then hop back the second number. Where you land is the answer.

Find the missing number: adding 3 numbers

Maths worksheet: estimating on a number line

estimating-1By year 2 children should be beginning to understand the vocabulary of estimating, which includes other terms such as roughly, guess how many, about the same as, nearly, close to etc.

This worksheet looks  at estimating a whole number on a number line from 0 to 10. Probably the best technique to use is to try and estimate the middle of the line, which will be 5 and then work either from 0 to 5 or 5 to 10.

Estimating on a number line (pg 1)

Maths vocabulary for year 2: time

We continue to list the recommended vocabulary in year 2, this section dealing with Time.
Words to do with Time include the months of the year:
January                       February
March                         April
May                             June
July                              August
September                October
November                December
Plus some more general time words:
minute                     second
quarter to               quarter past
digital                       analogue
clock                         watch                    timer
Remember: children are expected to be acquainted with these words, but not necessarily to be able to spell them.

(Taken from Mathematical Vocabulary Book  DfEE)

Vocabulary for Year 2: Time

Maths vocabulary for Year 2: multiplication and division

It is in year 2 that multiplication and division really become important. Understanding terms such as ‘lots of’, ‘share equally’ and ‘divide’ are all introduced in a practical sense i.e. children need plenty of opportunities to share items out and to group into sets.
The vocabulary introduced in year 2 concerning multiplication and division of numbers includes:
lots of groups of
times multiply multiplied by multiple of
once twice three times
four times five times up to ten times
times as (long, big etc)
repeated addition
array row column
share equally one each two each three each etc
group in pairs group in tens
equal groups of
divide divided by divided into

Find a larger version of this list in the link below.

Remember that new vocabulary should not be introduced in isolation, but in suitable contexts.

(Taken from Mathematical Vocabulary Book DfEE)
Maths vocabulary: multiplication and division

Maths vocabulary: Year 2 Counting and Place Value

Maths vocabulary from mathsblog.co.uk

Some quite difficult vocabulary is introduced in Year 2. We shall start with the recommended new vocabulary for Counting and Place Value.
Words to do with Counting and Properties of numbers are:
hundreds thousand
threes fours fives sixes
sevens eights nines tens
twenty-first twenty-second etc
tally multiple of sequence continue predict rule
one-digit two-digit three-digit
place value stands for represents exchange
Much of the new vocabulary will be concerned with the introduction of multiplication and division, so a word like threes will be used in a question “How many threes in six?”
Remember that new vocabulary should not be introduced in isolation, but in suitable contexts.

(Taken from Mathematical Vocabulary Book DfEE)

Below is a link to these words written so that they can printed be displayed.

Maths vocabulary year 2: Counting and Place Value

Free Y2 maths worksheet: make 5 sided shapes

Free maths worksheet from mathsblog.co.uk

A pinboard and some elastic bands are a great resource for young children to use when exploring the properties of shapes.

A reminder that this can be made by nailing panel pins or small nails into a piece of plywood approximately 24cm × 24cm.

Cut out the plywood and mark a grid of lines at 2cm intervals in both directions across the plywood. Tap in the pins at the points where the lines of the grid meet. Leave enough of the pins protruding to accommodate elastic bands.

5 sided shapes are not that easy to draw or make as they can not be made using just right angles. This is a good exploration of the different types of shape that can be made and whether shapes are the same or not if they are rotated.

Free maths worksheet: make 5 sided shapes

Free Y2 maths worksheet: Count back

Free Y2 maths worksheet from mathsblog.co.uk

Many children find it harder to count back than count on. This is quite a simple page as it does not involve counting back through a whole ten. Sometimes children will count back using their fingers. Hopefully as confidence grows they will be able to see some answers straight away, eg Count back 5 from 46 is 41 because they have remembered that 6 – 5 is 1.

Count back (Pg 1)

Free Y2 maths worksheet: Count on

using2.pngWe often assume that once children have gained some confidence with small numbers that they automatically can move on to using larger numbers. This may well not be the case.

Here is a simple maths worksheet which is all about counting on single digits from a 2-digit number. The most obvious way to do this is by counting on in ones from the first number, but the question remains as how do you know how many you have counted on? Usually children will use their fingers. For example count on 6 from 24. Start at 24, count one to 25 and hold thumb out, then 26 for one finger and so on. When one hand and one further finger has been extended then they know that they have counted on 6. Essential to this process is knowing how many fingers you need to count on 6 without actually counting out loud up to 6 (as you are counting out loud from 24 to 30).

Adults presume knowledge of this, but it might be worth checking before starting such an exercise.

Free Y2 maths worksheet: Count on

Free Y2 maths worksheet: Solve puzzles and investigate (2)

Here we have the digits from one to nine again, this time the task is to use three digits to make 12.

know1Here we have the digits from one to nine again, this time the task is to use three digits to make 12. This is much harder than just using two digits and it would be a good idea to have some cards printed out with the digits on to help with this. They are available in the reception maths worksheets section.

Again plenty of opportunity for talking about the numbers and what counts as a different way. Is 1 + 2 + 9 the same as 2 + 1 + 9 ?

Free Y2 maths worksheet: Solve puzzles and investigate (2)

Free Y2 maths worksheet: Solve puzzles and investigate

using2.pngThis free maths worksheet continues the investigative approach to mathematics begun in year one. It is concerned with children using their knowledge to solve problems and puzzles, find patterns, make generalisations and begin to predict. Continue reading “Free Y2 maths worksheet: Solve puzzles and investigate”