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Teaching Notes

Number - Addition and Subtraction

Welcome to Week 5 and a huge well done for all your hard work so far. This week we are returning to Number work and focusing on addition and subtraction

Monday to Thursday - Addition and Subtraction Booklet 

This week is all about consolidating addition and subtraction strategies, children are being supplied with a booklet that covers a range of strategies including questions which need to be done mentally and others in written form. Children can work through the booklet at their own pace choosing which activities to do. Each booklet has a complete set of answers


Key Vocabulary

Vocabulary is a key part of maths and knowing what a word is asking you to do. Ask your child to list all the words they know for addition and subtraction. How many did they come up with? Check them off from the picture below.

 

 
 

All these words indicate whether we are adding or subtracting. When working with you child this week try to incorporate key language from the picture each day.

 

Two other terms in the booklets are:

*Rounding - making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to use. Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 goes up to 80.

*Estimating- to guess or calculate the cost, size, value, etc. of something. In the booklets children are asked to estimate an answer before checking with a written calculation

 

Word Problems

Each of the booklets includes word problems. Remind children about going through the steps of RUCSAC when answering word problems. 

 

A useful strategy for answering word problems is using the Bar Modelling method. Bar models are where pictures of bars are used to represent calculations and word problems. The rectangles or 'bars' are proportional so that a larger number in a problem is represented by a larger bar. It does not provide the answer but gives the user an understanding of what calculation is needed to find the answer.

 

In this example 55 is the answer as 45 and 100 are already provided and we can solve this by taking 45 of 100. 

 

In word problems, bar models have the big benefit of helping children to decide which operations they can use or how to visualise problems.Sometimes calculations and word problems are difficult for a child to visualise in their head. Bar models help them to see the maths more clearly.

 

Once your child becomes confident in using bar models, you can encourage the use of them to help their learning in many different areas of maths. Remember only get your child to use a strategy they find useful, not every child learns the same way so therefore not every strategy will be helpful to every child.

Friday 

Task 1 - Emoji code Breaker

For some Friday fun, we have set the children an emoji code breaker. Children need to work out the digits in each calculation using the emojis. They must then add the numbers together to break the code! Good luck!

 

 

Task 2- Friday Test

This week's times table focus was x6. Ask your child their x6 tables in a random order ensuring you cover all times tables from 0 x 6 to 12 x 6. In addition to the x6 tables, ask your child to list 5 other terms for addition and 5 other terms for subtraction. Check them against the picture at the top of the page. 

 

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