Throughout this term our class has been focusing on Number in Maths. We have now just finished the topic addition and beginning to learn about subtraction.
Addition is bringing two or more numbers (or objects) together to make a total. Other names for Addition are Sum, Plus, Increase, Total
To add larger numbers together we have used column addition. You can watch the video from Maths is Fun website below that explains this strategy.
You can practice some addition sums by clicking here
Subtraction is taking one number away from another. Other names used in subtraction are Minus, Less, Difference, Decrease, Take Away, Deduct.
To subtract numbers with more than one digit we practised subtraction with regrouping. Subtraction can be a little more complicated than addition. Here is a video to help explain
You can practice some subtraction problems here
Now that we have practiced the skills we are now beginning to use them to solve real life problems.
Addition Real Life Problem
Our class was given a map of Australia with the flight distances to many cities around Australia. We had to use these distances to calculate what the total distance would be to fly to some of these cities around Australia. This was an interesting lesson because not only did we practise the skill of addition but we learnt how far away in kilometers some place are around our country. We began by adding just two distances together because the flight was quit short. We then were given some extra challenging questions where we had to fly longer distances which included some ‘stop overs’ to other places to get to our final destination. Some flights had two or more choices of the pathway to get to our final destination, so we had to choose which flight would be the shortest and calculate the answer. Here is the map below that we used and some of our working out!
Subtraction Real Life Problem
This week we had to bring in a ‘Used Car Guide’ from a newspaper and cut out some advertisements. We had to then paste 2 advertisements in our books and compare by recording the subtractions and writing to show the cost differences. This is something that adults can do in real life when trying to buy a car by comparing the prices to find out which one is cheaper or the better deal.
Here are our answers
We have enjoyed using our addition and subtraction skills in everyday life situations. This really shows how important it is to have these skills to help us calculate many problems similar to these.
What did you enjoy the most about these tasks?
What skill do you feel you would like to practice more or have more challenges in?
Can you think of a problem in everyday life where you would need your addition or subtraction skills?