Oblicz: 2 i 5/8 x 1 1/3= 4 1/5 : 7/15 = Zamień na cm kwadratowe : 240 mm kwadrat. 0,4 dm kwadrat. 12,5 dm kwadrat.
2 i 5/8 x 1 1/3= 21/8·4/3 = 7/2 = 3 1/2
4 1/5 : 7/15 = 21/5÷7/15 = 21/5·15/7 = 9/1 = 9
240 mm² = 2,4cm²
0,4 dm² = 40cm²
12,5dm² = 1250cm²
1m² = 100dm² ⇒ 1dm² = 0,01m²
1dm² = 100cm² ⇒ 1cm² = 0,01dm²
1cm² = 100mm² ⇒ 1mm² = 0,01cm²
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2 i 5/8 x 1 1/3= 21/8·4/3 = 7/2 = 3 1/2
4 1/5 : 7/15 = 21/5÷7/15 = 21/5·15/7 = 9/1 = 9
240 mm² = 2,4cm²
0,4 dm² = 40cm²
12,5dm² = 1250cm²
1m² = 100dm² ⇒ 1dm² = 0,01m²
1dm² = 100cm² ⇒ 1cm² = 0,01dm²
1cm² = 100mm² ⇒ 1mm² = 0,01cm²