About formal written addition for Year 3 …
MyMiniMaths introduces formal written addition for Year 3 with the free daily fluency, home learning and iQ mastery learning packs supported by a You Tube video tutorial. Adding values is one of the first skills learners develop in maths. Counting by adding in ones or units allows us to count a number of given objects. Formal written methods provide a method for the addition of larger values working beyond our mental strategies. This takes the form of adding or finding the total of 2 and 3 digit numbers in Year 3. The formal column or vertical method helps support the understanding of place value across the columns: units or ones, tens, hundreds and into thousands. These values can also be interchanged as learners need to understand the order of the values has no impact on the calculation. Values of different lengths can also be mixed, further supporting the development of the learners’ understanding of place value, ensuring digits are placed in the correct column. From here, Year 4 are introduced to 4-digit numbers in week 1, Year 5 learners add both 3 and 4-digit values in week 1 before progressing to Year 6 mixed addition and subtraction again in week 1, developing their understanding of inverse calculations. The introduction of adding decimal values in Year 6, not only supports the addition of money, but an essential real-life skill, supporting many areas of the Key Stage 3 curriculum.
The most frequently seen error when learners are adding, is forgetting to include a carried value from the previous column. It is good practice for learners to circle the carried value when used, to help identify any unused values.
Varied application is the use of 2 or more learning objectives in different contexts. Skills are readily used across the maths curriculum, often without realisation, giving opportunity for learners to apply their understanding and confidence of written addition for Year 3 in a variety of mathematical contexts. Varied application promotes the wider curriculum and extends the coverage of skills outside of discrete lessons. Adding is one of the fundamental skills required across many areas of the maths curriculum and can be applied to other Year 3 learning objectives including:
- WEEK 5 – 10 more or less than a number
- WEEK 14 – mental addition
- WEEK 15 – adding length
- WEEK 19 – further written addition
- WEEK 23 – more mental addition
- WEEK 26 – addition facts up to 20
- WEEK 27 – adding fractions
- WEEK 28 – adding mass
- WEEK 34 – more written addition
- WEEK 38 – related addition and subtraction facts
- WEEK 46 – adding capacity