Witajcie ! Mam do zrobienia prosciutkie zadanie z matematyki o obwodach ; D Wiec tak :
Dodajmy :a) 5 i 3/10 cm + 7 i 1/2 cm + 9 i 4/5 cm
Teraz to dzialanie : !
b)8 i 7/10 cm + 4 i 2/5 cm +6 cm +11 i 1/2 cm . Proste prawda . ? Wiec prosze bez przecinkow tylko dodac cm`y i milimetry i wynik podac. ; D z kazdego
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A)5 i 3/10 = 5 cm 3mm
7 i 1/2 = 7cm 5mm
9 i 4/5 = 49/5 = 98/10 = 9 cm 8mm
B) 8 i 7/10 = 8 cm 7 mm
4 i 2/5 cm = 22/5 = 44/10 = 4 cm 4 mm
6 cm = 60 mm
11 i 1/2 cm = 11 cm 5 mm
a) 5 i 3/10 cm = 53mm
7 i 1/2 cm = 75mm
9 i 4/5 cm= 9 i 8/10cm = 98mm
53mm+75mm+98mm= 226mm = 22 cm 6 mm
b)8 i 7/10 = 87mm
4 i 2/5cm = 4 i 4/10cm = 44mm
6cm=60mm
11 i 1/2cm = 11 i 5/10cm= 115mm
87mm+44mm+60mm+115mm=306mm = 30cm 6 mm