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##### Worded problems

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**Worded problems**“Finding the difference”**A sheep is 65cm tall**and a chicken is 40cm tall. What is the difference in their heights? 65 cm 40 cm**Follow the 6 steps for worded problems:**• Read the question carefully. • Decide which operation is needed. • Write out the number sentence. • Complete the calculation. • Check your answer. • Write the answer out in full.**Let’s follow the steps:**• Read the question carefully. A sheep is 65 cm tall, a chicken is 40 cm tall. What is the difference in their heights? • What operation do we need to use? Subtraction. • What is our number sentence? 65cm – 40cm =**Complete our calculation.**We will use a number line to help us: 65cm - 40cm = 25cm 10cm + 10cm + 5cm = 25cm 10 10 5 40cm 50cm 60cm 65cm**Check our answer.**• Check using the inverse operation. What is the inverse of subtraction? Addition So if: 65cm – 40cm = 25cm we should find that: 40cm + 25cm = 65cm.**Let’s check using the number line:**40cm + 25cm = 65cm + 10 + 10 + 5 40cm 50cm 60cm 65cm**Write out our answer.**• 65cm – 40cm = 25cm • The difference between the height of the sheep and the chicken is 25cm.