Solving Subtraction Word Problems Year 5
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Solving Subtraction Word Problems
Year 5 Mathematics 60-minute lesson Building problem-solving confidence
WALT - We Are Learning To
Understand and apply subtraction strategies to solve word problems Identify the appropriate operations needed in problem contexts Use reasoning skills to explain solutions and check answers Build confidence with one- and two-step problems
Mental Warm-Up Challenge
Quick subtraction practice: 100 - 25 = ? 82 - 47 = ? 150 - 38 = ? Think fast and build confidence!
Success Criteria - How We Know We've Succeeded
I can read and understand subtraction word problems I can correctly choose when subtraction is needed I can solve one- and two-step subtraction problems accurately I can explain my thinking and check my solutions
Spotting Subtraction Keywords
Words that signal subtraction: 'Left over' - How many sweets were left? 'Difference' - What's the difference in height? 'Fewer' or 'Less' - 5 fewer apples 'Take away' - Take away 15 minutes 'Remaining' - How many remained?
Problem-Solving Strategy
{"left":"Step 1: Read the problem carefully\nStep 2: Underline the important numbers\nStep 3: Circle the keyword that tells you to subtract","right":"Step 4: Work out the calculation\nStep 5: Write your answer with units\nStep 6: Check your answer makes sense"}
Let's Practice Together!
Problem: Sarah had 85 stickers. She gave 23 stickers to her friend. How many stickers does Sarah have left? Work through each step: • What are the important numbers? • What keyword tells us to subtract? • What's our calculation? • Does our answer make sense?
Remember: Check Your Answer!
'A good mathematician always checks their work by asking: Does this answer make sense in the real world?'