Oblicz, zamieniając ułamki dziesiętne na ułamki zwykłe
a) 0,2 x 2,5 =
b) 0,4 x 3,75 =
c) 0,15 x 2,5 =
d) 0,04 x 12,5 =
a) 0,2 x 2,5 =2/10 * 2 5/10 = 2/10 * 25/10 = 50/100 = 1/2
b) 0,4 x 3,75 = 4/10 * 3 75/100 = 4/10 * 3 3/4 = 4/10 * 15/4 = 60/40=1 1/2
c) 0,15 x 2,5 = 15/100 * 2 5/10 = 3/20 * 25/10 = 75/200 = 3/8
d) 0,04 x 12,5 = 4/100 * 12 5/10 = 1/25 * 25/2 = 25/50 = 1/2
Pozdrawiam! ;)
a) * ==b)
* = =1 c) * ==d) * = =
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a) 0,2 x 2,5 =2/10 * 2 5/10 = 2/10 * 25/10 = 50/100 = 1/2
b) 0,4 x 3,75 = 4/10 * 3 75/100 = 4/10 * 3 3/4 = 4/10 * 15/4 = 60/40=1 1/2
c) 0,15 x 2,5 = 15/100 * 2 5/10 = 3/20 * 25/10 = 75/200 = 3/8
d) 0,04 x 12,5 = 4/100 * 12 5/10 = 1/25 * 25/2 = 25/50 = 1/2
Pozdrawiam! ;)
a) * ==
b)
* = =1
c)
* ==
d)
* = =