Question

To są zadania z Matematyka 1 / Matematyka z plusem / gimnzajum

zad.54.str.50

1/3*4/5

_______ =

4

1 1/5

______=

4/5:2/3

1 1/2 * 2/7

___________=

2 1/4 * 1/3

2/5 : 2 1/2

__________=

3/7* 1 1/6

zad.55.str.51

a) 5- 3/7:3/14=

b)___0,12-0,04__=

2

c)(0,2)2 - (0,1)2 =

e) 6-1 1/2 * 2/3=

f 7,5+2:5=

H) (1,3+2,7)*1 1/4-1,2=

i) 4/5*0,5 + 2/9*0,9=

J 3 3/4 * 4 - 10 * 2/5=

zad.4.str.39

-4,5- 2 1/4=

e) - 3 1/3 - (- 5 5/6)=

7 1/3 + ( -4 5/6)=

- 5 4/7 + 7=

1,23-9=

-6-(-4 5/9)=

Answer 1

zad.54/str.50

1/3*4/5    4/15     

_______=  _____ = 4/15*1/4=1/15

    4            4/1

 

 

 1 1/5        6/5        6/5

_______= ______=  ____= 6/5*5/6=1

4/5:2/3   4/5*3/2    6/5

 

 

1 1/2*2/7   3/2*2/7    3/7

________= _______= ____= 3/7*4/3=4/7

2 1/4*1/3   9/4*1/3    3/4

 

 

2/5:2 1/2    2/5:5/2   2/5*2/5    4/25 

________=  _______=  _______= ____= 4/25*2/1=8/25

3/7*1 1/6    3/7*7/6      1/2        1/2

 

 

zad.55/str.51

a) 5-3/7:3/14=5-3/7*14/3=5-2=3

b)

c) (0,2)²-(0,1)²=0,04-0,01=0,03

e) 6-1 1/2*2/3=6-3/2*2/3=6-1=5

f) 7,5+2:5=7,5+0,4=7,9

h) (1,3+2,7)*1 1/4-1,2=4*5/4-1,2=5-1,2=3,8

i) 4/5*0,5+2/9*0,9=4/5*1/2+2/9*9/10=2/5+2/10=4/10+2/10=6/10=3/5

j) 3 3/4*4-10*2/5=15/4*4-20/5=15-4=11

 

 

zad.4/str.39

-4,5-2 1/4=-45/10-9/4=-180/40-90/40=-270/40=-6,75

-3 1/3-(-5 5/6)=-10/3+35/6=-20/6+35/6=15/6=2 3/6= 2 1/3

7 1/3+(-4 5/6)=22/3+(-29/6)=44/6-29/6=15/6=2 1/3

-5 4/7+7=-39/7+49/7=10/7=1 3/7

1,23-9=-7,77

-6-(-4 5/9)=-54/9+41/9=-13/9=-1 4/9