Matematika

Pertanyaan

1. 25 DAM= ... CM
2. 40 DM + 80 MM= ... CM
3. 7000 M + 120 HM= ... KM
4. 40.000 M= ... KM
5. 20 M= ... HM

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2 Jawaban

  • 1. 25 dam x 1000= 25000 cm
    2. 40 dm x 10 = 400 cm
    80 mm : 10 = 8 cm
    400 cm + 8 cm = 408 cm
    3. 7000 m : 1000 = 7 km
    120 hm : 10 = 12 km
    7 km + 12 km = 19km
    4. 40000 m : 1000 = 40 km
    5. 20 m : 100 = 0,2 hm
  • 1. 25 dam = 25 × 1000 cm = 25.000 cm
    2. 40 dm = 40 × 10 cm = 400 cm
    80 mm = 80 : 10 cm = 8 cm
    (400 cm + 8 cm = 408 cm)
    3. 7000 m = 7000 : 1000 km = 7 km
    120 hm = 120 : 10 km = 12 km
    (7 + 12 km = 19 km)
    4. 40.000 m = 40.000 : 1000 = 40 km
    5. 20 m = 20 : 100 = 0,2 hm

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