Starter - Numbers from 60-70
Today's starter task is to quick-write numbers between 60 and 70. Your grown up says a number then you write it in numerals. After a practice, see how many you can get in one minute.
Word and Real-life Problems
Having done a lot of work on addition and subtraction over that last two weeks, we are now going to practice applying it into word and real life problems.
With worded problems, the main challenge lies in trying to decide which operation is required to solve the problem. The four operations are addition, subtraction, multiplication and division. In Year One, our primary focus are addition and subtraction.
In school we do 'Maths Karate' where the children make symbols for addition and subtraction with their arms to show which symbol they think they need. See if you can show your grown-up some 'Maths Karate' now if they say the words 'addition' and 'subtraction'.
What do I need to do to solve a word problem?
Before we can do any calculations we need to be able visualise the problem. This means getting a picture in your head of what is going on. This comes very naturally for some but can be a challenge for others. If you need to, do a little sketch of what is happening or use objects to represent things in the problem (this is possible in year one because of the size of the numbers we deal with).
You can also get clues from the sorts of words used in the problems. If the question talks about how many more or less, then it is almost certainly a subtraction finding the difference type problem. If it uses words like total and altogether, it is probably an addition problem.
For today's task you are not going to worry about actually solving the calculations. All you need to do is decide if the problem is an addition or a subtraction problem.
Next to each question, write down whether it is an addition or a subtraction and explain to your grown-up how you know. Please do not work out the answers yet as we are going to be doing that tomorrow.
1. There were 12 chocolates in a bag. I ate 4 of them. How many were left?
2. Sam has 5 stickers. Polly has 9 stickers. If Sam wants to collect as many stickers as Polly, how many more does he need?
3. Emma is two years older than David. David is 9. How old is Emma?
4. Scott rolled his marble 4 metres. Ben rolled his 8 metres. How much further did Ben’s ball roll?
5. 3 bricks balance a toy car. 8 bricks balance a book. If the car and the book are on the scales together, how many bricks will balance them?
6. The classroom is 14 metres long. The hall is 5 metres longer. How long is the hall?
Now try and make an addition word problem and a subtraction word problem of your own.
I, you, love, come, some
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