Here we have a brief summary of some of the most important maths concepts to be taught in Year 3. More detail is available via the link below and on the urbrainy.com website. 1. Counting Making progress with counting will still be important in year 3, using up to three digit numbers. Grouping into tens or fives and using tally charts are both effective ways of counting larger sets of objects. In Year 3 work on counting in tens will cross the hundreds boundary (eg count on from 285:  295, 305 etc).  This is harder than we might think and requires a good understanding of counting. A lot of oral work is necessary if children are to become confident with this and it will help a great deal with mental arithmetic if children can count up and down in tens from any starting point. Having counted from one number to another it is a good idea to ask how many tens they have counted. Counting on and back will progress to larger numbers. Starting with any small number, it is expected that children will be able to count on in steps of 2, 3, 4, 5, as well as 10. Counting on and back in whole hundreds, up to 1 000, is also introduced in year 3. Simple sequences, or patterns of numbers, which go up or down in equal steps should be recognised and children should continue to try to say what the rule is when they recognise a sequence. They should also begin to make up their own sequences of numbers, given certain conditions eg ‘make a sequence that has a 4 and a 12 in it’ or ‘make a sequence which goes up in twos’. Work will continue with multiples, extending to multiples of 50 and 100. 2. As well as reading and writing numbers up to 1 000 children are also expected to understand what any digit in a three digit number represents. 3. Comparing and ordering numbers Children are expected to be more confident in  their knowledge and use of the vocabulary which is used when comparing and ordering numbers. 4. Rapid mental response Rapid mental response to questions involving the addition and subtraction of 1,  10  and 100 is expected by the end of year 3. Building on earlier work questions will now involve crossing the hundreds boundary. e.g. what is one less than 400? 5. Estimating and rounding In year three children will continue to make estimates of numbers and measurements, usually up to about 100. This could involve the number of marbles in a jar, counters in a pile, lines on a page, words in a paragraph etc and a great deal of practice at estimating can be done in the outside environment. 6. Understanding Fractions In year 3 children will be introduced to the fraction 1/10 (one tenth), as well as fractions such as 1/3 (one third) and 3/4 (three quarters), where the numerator (top number) is more than one. Get more information on Year 3 Counting and Number