Question

Va rog!E foarte urgent!
Dau:
-coroana
-mulțumesc
-10 puncte

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Answer 1

Răspuns:

Explicație pas cu pas:

a)

180 dam + 320 dam = 500 dam = 5 000 m;  dam > m de 10 ori

1 000 m - 50 dam = 100 dam - 50 dam = 50 dam;  m < dam de 10 ori

6 × 250 dam = 1 500 dam = ( 1 500 : 10 ) hm = 150 hm; dam < hm de 10 ori

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4 m + 32 dm = 40 dm + 32 dm = 72 dm;  m > dm de 10 ori; (4 x 10dm )

42 m - 30 dm = 42 m - 3 m = 39 m;   dm < m de 10 ori (30: 10)m

6 × 220 dm = 1 320 dm = 132 m; dm < m de 10 ori ( 1 320 : 10)m

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c)

17 dm + 19 cm = 170 cm + 19 cm = 189 cm;  dm > cm de 10 ori(17 ×10)cm

415 dm - 70 cm = 415 dm - 7 dm = 408 dm;   cm < dm de 10 ori (70:10)dm

80 mm : 2 = 40 mm = (40 : 1000)m = 0,04 m

mm < m de 1 000 de ori ( milimetrul < metrul de 1 000 de ori )