Matematika

Pertanyaan

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1 Jawaban

  • 5) 6½ - 3¼ - 7/10
    = ( 6 - 3 ) + ( ½ - ¼ - 7/10)
    = 3 + ( 10/20 - 5/20 - 14/20)
    = 3 + ( - 9/20)
    = 3 - 9/20
    = 2 11/20 kg ( D )

    6) a - b + c
    = 12½ - 3²/5 + 1 16/24
    = 12½ - 3 2/5 + 1 ⅔
    = 12 15/30 - 3 12/30 + 1 20/30
    = 10 23/30 ( D )

    7) 4⅓ × 2/5 × 0,5
    = 13/3 × 2/5 × 5/10
    = 26/15 × 5/10
    = 130/150
    = 13/15 ( A )

    8) 7 × 5¼
    = 7 × 21/4
    = 147/4
    = 36 ¾ ( B )

    9) 2,5 × 0,02
    = 25/10 × 2/100
    = 50/1000
    = 0,050 ( C )

    10) 4⅓ ÷ 3/5 ÷ 1,5
    = 13/3 × 5/3 ÷ 15/10
    = 65/9 × 10/15
    = 650/135
    = 4 110/135
    = 4 22/27 ( D )