Question

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a) 3/7+5/7=

10 (całych) - 4/5 =

6/11 - 4/11 =

7(całych) - 3 (całe)1/6 =

b) 2(całe)3/5 + 7(całe)4/5=

6(całych)3/7 + 8(całych)4/7=

6 (całych ) 8/9 - 2(całe) 5/9 =

1(cała)2/9 - 7/9 =

c) 3/4 + 5/8 =

3(całe)1/2 + 4(całe)5/6 =

2/3+3/5 =

2/3-3/5=

d)

1(cała)2/7 -1/2 =

9(całych)5/8 - 5 (całych)7/10=

2(całe)3/4 - 5/12 =

6(całych)1/6 - 3 (całe) 3/8 =

Answer 1

a)

3/7+5/7=8/7=1cały 1/7

10całych-4/5= 10/1-4/5 =50/5-4/5=46/5

6/11-4/11=2/11

7c2/9-7/9=6c 11/9-7/9=6c 4/9

b)

2c 3/5+ 7c 4/5= 9c 7/5= 10c 2/5

6c 3/7+ 8c 4/7=14c 7/7= 15c

6c 8/9 - 2c 5/9=4c 3/9

1c 2/9 - 7/9 = 11/9 - 7/9 = 4/9

c)

3/4 + 5/8= 6/8+ 5/8= 11/8= 1 3/8

3c 1/2 +4c 5/9=7/9+41/9= 63/18+82/18=145/18=8c 1/18

2/3+3/5=10/15+9/15= 19/15= 1c 4/15

2/3-3/5=10/15-9/15=1/15

d)

1c 2/7-1/2= 9/7-1/2=18/14-7/14=11/14

9c 5/8 -5c 7/10=77/8-57/10=385/40-228/40=130/40=3c 3/4

2c 3/4 -5/12=11/4-5/12=33/12-5/12=28/12=2c 4/12

6c 1/6-3c 3/8= 37/6-27/8=148/24-81/24=65/24=2c 17/24

Answer 2

a ) 3/7 +5/7=8/7=1i 1/7

10-4/5=9 5/5-4/5=9 i 1/5

6/11 - 4/11=2/11

7 - 3 1/6= 6 i  6/6 - 3 i 1/6= 3 i 5/6

 

b) 2 i 3/5 + 7 i 4/5= 9 i 7/5

6 i 3/7 + 8 i 4/7=15

6 i 8/9 - 2 i 5/9 =4 i 3/9

1 i 2/9 - 7/9= 1 3/9 -7/9=12/9 - 7/9=5/9

 

c) 3/4+ 5/8=6/8 + 5/8=11/8=1 i 3/8

3 1/2 + 4 5/6= 3 3/6 + 4 5/6 =7 8/6

2/3+ 3/5=10/15+ 9/15= 19/15 =1 4/15

2/3 - 3/5= 10/15-9/15= 1/15

 

d) 12/7-1/2=1 4/14 -7/14=18/14-7/14=11/14

9 5/8 - 5 7/10=9 25/40- 5 28/40 =8 65/40 - 5 28 /40= 3 37/40

2 3/4 - 5/12=2 9/12 - 5/12= 2 4/12=2 1/3

6 1/6 - 3 3/8=6 4/24 - 3 9/24= 5 28/24 - 3 9/24= 2 19/24 

 

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