Question

Matematyka z plusem ZBIÓR ZADAŃ klasa 1 gimnazjum strona 16 zadanie 51

zad. 51/16

a.

1 7/10 + 1 1/15 : 2 2/3 =

b.

2 2/5 - 3 [do potengi 2] : 1 1/2 =

c.

9 3/8 : (1 1/2) [do potengi 3] - 1 5/6 =

d.

13,27 - 1,25 + 9,39 =

Answer 1

a)...=1 7/10 +16/15 :8/3 = 1 7/10 + 16/15 * 3/8= 17/10 + 2/5 =17/10 + 4/10 = 21/10= 2,1

b)...= 2 2/5 -3^:3/2 = 2 2/5 - 9/1 : 2/3= 12/5 - 6/1 = 12/5 - 30/5 = - 18/5 = - 3 3/5

c)...= 9 3/8 :(3/2 *3/2 *3/2 )- 1 5/6 = 75/8 : 27/8 - 11/6 = 75/8 * 8/27 - 11/6= 75/27 - 11/6 = 450/ 162 - 297/162= 153/162

d)...=13,39- 10, 64=2,63

 

w b) ^to do potegi 2

Answer 2

a.

1 7/10 +1 1/15 : 2 2/3= 17/10 - 16/15 : 8/3= 51/30-32/30: 8/3= 21/30 * 3/8 = 21/80

b.

2 2/5 - 3^2 : 1 1/2= 15/5 - 9 : 3/2= 15/5 - 9/1 : 3/2= 15/5 - 45/5 :3/2= -30/5*2/3= -10/5 * 2/1= - 20/5= -4

c.

9 3/8:(1 1/2)^2 - 1 5/6= 75/8:(3/2)^2 - 11/6= 75/8 : 9/4 - 11/6= 75/8*4/9 - 11/6= 300/72 - 11/6= 300/72 - 132/72= 168/72= 2 24/72 = 2 12/36 = 2 1/3

d.

13,27 - 1,25 + 9,39=21,41