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

(3 3/4 - 1 1/3 - 2) : 1 7/9 = (9/12 - 4/12) : 16/9 = 5/12 * 9/16 = 5/4 * 3/16 = 15/64

 

(1 1/6 + 2 5/8 * 1/3) : 24/17 = (7/6 + 21/8 * 1/3) * 17/24 = (7/6 + 7/8) * 17/24 = 28/24 + 21/24 = 49/24 = 2 1/24

 

(8 1/3 + 1 7/15 - 8 13/15) : 21/25 = (1 5/15 + 7/15 - 13/15) * 25/21 = (27/15 - 13/15) * 25/21 = 14/15 * 25/21 = 2/3 * 5/3 = 10/9 = 1 1/9

 

(3 3/4 - 5/12 - 17/24 ) : 7/16 = (2 42/24 - 10/24 - 17/24) * 16/7 = (2 32/24 - 17/24) * 16/7 = 2 15/24 * 16/7 = 63/24 * 16/7 = 9/3 * 2 = 18/3 = 6

 

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