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PSLE 2011 - (Number x Value)
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PSLE 2011 - (Number x Value)

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    PSLE 2011 - (Number x Value) PSLE 2011 - (Number x Value) Presentation Transcript

    • Total Value= Number x Value
      PSLE 2011/P1
      Jane bought twice as many 50-cent stamps as 80-
      cent stamps. How many 80-cent stamps can Jane
      buy if she spent a total of $30.60?
    • Jane bought twice as many 50-cent stamps as 80-cent stamps. How many 80-cent stamps can Jane buy if she spent a total of $30.60?
      Total Value= Number x Value
      STEP 1
    • Jane bought twice as many 50-cent stamps as 80-cent stamps. How many 80-cent stamps can Jane buy if she spent a total of $30.60?
      Total Value= Number x Value
      STEP 1
    • Jane bought twice as many 50-cent stamps as 80-cent stamps. How many 80-cent stamps can Jane buy if she spent a total of $30.60?
      Total Value= Number x Value
      STEP 2
      3060
    • Jane bought twice as many 50-cent stamps as 80-cent stamps. How many 80-cent stamps can Jane buy if she spent a total of $30.60?
      Total Value= Number x Value
      3060
      STEP 3
      100u + 80u  3060
    • Jane bought twice as many 50-cent stamps as 80-cent stamps. How many 80-cent stamps can Jane buy if she spent a total of $30.60?
      Total Value= Number x Value
      3060
      STEP 3
      100u + 80u  3060
      180u  3060
    • Jane bought twice as many 50-cent stamps as 80-cent stamps. How many 80-cent stamps can Jane buy if she spent a total of $30.60?
      Total Value= Number x Value
      3060
      STEP 3
      100u + 80u  3060
      180u  3060
      1u  3060 ÷ 180 = 17
      Ans: 17 (80-cent stamps)