Question

Proszę o pomoc .

Zad.1 Oblicz

a)5*3 i 4/5=

b)11 i 1/2 *4=

c)9*2 i 3/7=

d)4 i 5/8*3=

e)6*3 5/8=

f)2 i 7/12 i 8=

Zad.2 Oblicz

a)4/5 liczby 90:

b)2/20 liczby 55 :

c)1 i 5/8 liczby 144:

d) 4 i 5/8 liczby 14 :

Answer 1

a)5*3 i 4/5= 5 * 19/5 = 19

b)11 i 1/2 *4= 23/2 * 4 = 23 * 2 = 46

c)9*2 i 3/7= 9 * 17/7 = 153/7 = 21i5/7

d)4 i 5/8*3= 37/8 * 3 = 111/8= 13i6/8 = 13 i 3/4

e)6*3 5/8= 6 * 29/8 = 3 * 29/4 = 87/4 = 21 i 3/4

f)2 i 7/12 i 8= 31/12 * 8 = 31/3 * 2 = 62/3 = 20 i 2/3

Zad.2 Oblicz

a)4/5 liczby 90: = 90 * 4/5 = 18 * 4 = 72

b)2/20 liczby 55 : = 2/20 * 55 = 110/20 = 11/2 = 5 i 1/2

c)1 i 5/8 liczby 144: = 13/8 * 144 = 13 * 18 = 234

d) 4 i 5/8 liczby 14 : = 37/8 * 14 = 37/4 * 7 = 259/4 = 64 i 3/4

Answer 2

a)5*3 i 4/5=5*19/5=19

b)11 i 1/2 *4=23/2*4=46

c)9*2 i 3/7=9*17/7=153/7=21 6/7

d)4 i 5/8*3=37/8*3=111/8=13 7/8

e)6*3 5/8=6*29/9=174/9=19 3/9

f)2 i 7/12 *8=31/12*8=248/12=20 8/12

 

a)4/5 liczby 90=4/5*90=72

b)2/20 liczby 55 =2/20*55=22/4=5 2/4=5 1/2

c)1 i 5/8 liczby 144= 13/8*144=234

d) 4 i 5/8 liczby 14 =37/8*14=64 6/8