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FLOWERBEDS

FLOWERBEDS. Here are four flowerbeds surrounded by slabs. How many slabs would you need for 100 flowerbeds?. STRATEGY. Break the problem into smaller pieces Tabulate results Look for patterns and why they occur Find a formula Solve the problem. Break the problem into smaller pieces.

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FLOWERBEDS

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  1. FLOWERBEDS Here are four flowerbeds surrounded by slabs How many slabs would you need for 100 flowerbeds?

  2. STRATEGY • Break the problem into smaller pieces • Tabulate results • Look for patterns and why they occur • Find a formula • Solve the problem

  3. Break the problem into smaller pieces 1 Flowerbed has 8 slabs 2 Flowerbeds have 13 slabs Draw the diagrams for 3 and 4 flowerbeds

  4. Tabulate results 18 23

  5. …and why they occur Look for patterns… +5 +5 18 +5 23

  6. …and why they occur 8 +5 + 3 lots of 5 +5 +5

  7. Number of flowerbeds Number of slabs Input Output 1 8 2 13 3 18 4 23 x5 +3

  8. slabs = 5n + 3

  9. Solve the problem 100 flowerbeds? 503 slabs = 5n + 3 100 x 5 + 3 =

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