Worded problems in Maths Worded problems This week
Worded problems in Maths
Worded problems • This week we will be focussing on worded problems in maths. • We’ll start today by introducing a strategy that you can use to help you solve these types of problems. • As we know, strategies are just different ways of doing things, if you approach a problem differently but you find that your approach works for you… Brilliant! We all have different ways of solving problems. • On Tuesday and Thursday we’ll practise different worded problems featuring addition, subtraction, multiplying and dividing. • On Friday we’ll post an assessment to see how everyone is getting on!
The strategy • In any worded problem we have two different groups of information- Know n Facts that we know for sure. We can find this information in the text and use it to help us answer the question. Unknown These are the facts that we don’t know yet. We must read the text carefully to decide which unknown facts the question is looking for. • Once we have split the information into two groups, we can then use the facts we know to solve the problem.
Let’s apply the strategy Mr Inglis uses 10 apples to bake a pie. He started with 85 apples. How many pies has he made when he has 15 apples left? • First, let’s split the problem into the two parts: Known • Mr Inglis started with 85 apples. • Each pie he makes uses 10 apples. • Now, he only has 15 apples left. Unknown • How many apples has Mr Inglis used? • How many pies has he made?
Mr Inglis uses 10 apples to bake a pie. He started with 85 apples. How many pies has he made when he has 15 apples left? Now let’s solve the unknown! • We know that Mr Inglis started with 85 apples and now only has 15, so to work out how many he has used, we would use this calculation: 85 – 15 Remember to use a strategy for subtraction, for example take away the units first, then take away the tens. First: 85 – 5 = 80 Then 80 – 10 = 70 So Mr Inglis has used 70 apples!
Mr Inglis uses 10 apples to bake a pie. He started with 85 apples. How many pies has he made when he has 15 apples left? •
Now practise the strategy on these worded problems Remember to start by reading the question and splitting the facts up into Known and Unknown. 1) Andrew is saving up for a new guitar. He starts with £ 24. He saves £ 8 a week. How many weeks until he can buy a guitar which costs £ 88? 2) A baby bird weighs 42 grams (g). It gains 50 g every week. What is the bird’s weight after 8 weeks?
One more… 3) Sandy has a savings account. Every week she pays in £ 50. She starts with £ 300. How many weeks until she has £ 1000? Good luck, we’ll post the answers using the strategy tomorrow. Both Mr Inglis and Mr Rogerson will be online throughout the day on Teams if you have any questions.
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