Question

Matematyka z plusem ZBIÓR ZADAŃ klasa 1 gimnazjum

zad.

i.

(3 3/4 - 1 1/3 - 2 ) : 1 7/9 =

l.

( 1 1/6 + 2 5/8 x 1/3 ) : 24/17 =

h.

( 8 1/3 + 1 7/15 - 8 13/15 ) : 21/25 =

ł.

(3 3/4 - 5/12 - 17/24 ) : 7/16 =

f.

( 4 4/7 - 2 9/11 ) : ( 7 6/7 - 7 15/28) =

Answer 1

i) (3 3/4 - 1 1/3 - 2 ) : 1 7/9 = (3 9/12 - 1 4/12 - 2) : 16/7 = (2 5/12 -2) * 7/16 = 5/12 * 7/16 = 35/192

 

l) ( 1 1/6 + 2 5/8 * 1/3 ) : 24/17 = (1 4/24 + 2 15/24 * 1/3) * 17/24 = (3 19/24 * 1/3) * 17/24 = 91/74 * 17/24 = 1547/1776

 

h)  ( 8 1/3 + 1 7/15 - 8 13/15 ) : 21/25 = (8 5/15 + 1 7/15 - 8 13/15) * 25/21 = (9 12/15 - 8 13/15) * 25/21 = 14/15 * 25/21 = 350/315 = 70/63 = 1 1/9

 

ł) (3 3/4 - 5/12 - 17/24 ) : 7/16 = (3 18/24 - 10/24 - 17/24) * 16/7 = ( 2 42/24 - 10/24 - 17/24) * 16/7 = 2 15/24 * 16/7 = 63/24 * 16/7 = 9/3 * 2 = 18/3 = 6

 

f)  ( 4 4/7 - 2 9/11 ) : ( 7 6/7 - 7 15/28) = (4 44/77 - 2 63/77) : (7 24/28 - 7 15/28) = (3 121/77 - 2 63/77) : 9/28 = 1 58/77 * 28/9 = 135/77 * 28/9 = 15/11 * 4 = 60/11 = 5 5/11