" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
c) 6/7 i 3/4 --> 24/28 i 21/28
f) 2/5 i 4/9 --> 9/48 i 20/48
h) 3/16 i 5/12 --> 9/48 i 20/48
i) 2/15 i 7/9 --> 6/45 i 35/45
Zad.6
a) 2/3 + 3/4 = 8/12 + 9/12 = 17/12 = 1 5/12
b) 3/4 - 1/8 = 6/8 - 1/8 = 5/8
c) 5/12 +3/4 = 5/12 + 9/12 = 14/12 = 1 1/6
d) 2 4/9 - 1 5/6 = 2 8/18 - 1 15/18 = 11/18
e) 7 3/5 + 2 7/8 = 7 24/40 + 2 35/40 = 10 19/40
f)7/15 - 8/25 = 4 5/50 - 1 16/50 = 2 39/50
h) 17/18 + 17/24 = 68/72 + 51/72 = 129/72 = 1 57/72 = 1 19/26
Zad.7
a) 2/3 * 3/4 = 1/2
b) 3/4 : 1/8 = 3/4 * 8/1 = 6
c) 6/7 * 3/4 = 9/7 = 1 2/7
d) 1 2/9 : 1 5/6 = 11/9 : 11/6 = 11/9 *6/11 = 2/3
e) 5/12 * 1 7/15 = 5/12 * 22/15 = 11/18
f) 2 2/5 : 1 8/15 = 12/5 : 23/15 = 12/5 * 15/23 = 60/23 = 2 14/23
g) 1 9/16 * 8/25 = 25/16 * 8/25 = 1/2
h) 7/16 : 1 1/6 = 7/16 : 7/6 = 7/16 * 6/7 = 6/16
Zad.8
b) 3/5 * 2 2/9 = 3/5 * 20/9 = 4/3 = 1 1/3
c) 4/7 * 16 1/3 = 4/7 * 48/3 = 192 / 21 = 9 3/21 = 9 1/7
d) 1 1/2 * 30 = 45
e)1 1/3 * 10 1/2 = 4/3 * 21/2 = 14
f) 3 1/5 * 8 1/8 = 16/5 * 65/8 = 13
Zad.9
a) 3 * 5 1/3 + 6 2/3 : 4/5 = 3/1 * 16/3 + 20/3 : 4/5 = 16 + 20/3 * 5/4 = 16 + 25/3 = 16 + 8 1/3 = 24 1/3
b) 2 13/18 : 5 1/4 * 1 2/7 = 49/18 : 21/4 * 9/7 = 49/18 * 4/21 * 9/7 = 2/3
c) 2 4/5 - 1 1/5 * 2/3 + 5 1/15 = 14/5 - 6/5 * 2/3 + 76/15 = 14/5 + 4/5 + 5 1/15 = 18/5 + 5 1/15 = 3 9/15 + 5 1/15 = 8 10/15 = 8 2/3
Zad.10
ADAM
1/3 * 60 = 20 --> tyle cukiekow zjadl
1 - 1/3 = 2/3 --> taka czesc mu zostala
BARTEK
1/4 * 60 = 15 --> tyle cukiekow zjadl
1 / 1/4 = 3/4 --> taka czesc mu zostala
CELINA
15 * 60 = 15 --> tyle cukiekow zjadla
1 - 1/5 = 4/5 --> taka czesc jej zostala
Odp.: Adam zjadl 20 cukierkow, Bartek 15, a Celina 12. Adamowi zostalo 2/3 cukierkow, Bartkowi 3/4, a Celinie 4/5.
Zad. 11
a) 1/8
b)4/15
c) 1/4
d) 4/15
e) 9/20
f) 2/5
Zad. 12
a) 2/3 i 3/4 = 8/12 i 9/12 8/12 < 9/12
b) 1 2/5 i 1 15/25 = 1 10/25 i 1 15/25 1 10/25 < 1 15/25
c) 3 1/4 i 12/4 = 13/4 i 12/4 13/4 > 12/4
d) 1 3/7 i 1 2/5 = 1 15/35 i 1 14/35 1 15/35 > 1 14/35
e) 1 1/10 i 1 7/9 = 1 9/90 i 1 70/90 1 9/90 < 1 70/90
f)2 3/7 i 2 3/11 = 2 33/77 i 2 21/77 2 33/77 > 2 21/77