Question

oblicz:

1. 8 5/11 * 4 2/9 + 8 5/11 * 6 7/9=

2. 6 3/5 * 7 1/6 - 2 1/6 * 6 3/5 =

3. 7 1/8 / 4 3/4 * 8 =

4. 11 1/3 / 4/21 / 4 4/1=

5. 7/8 * 8/9 / 1 1/9=

6. (6 3/8 - 4 1/8) / 2 1/2=

7. ( 6 2/3 - 5 3/4) / 1 1/12=

8. ( 2 5/8 - 1 1/6) / 2 1/2=

9. 4 1/2 / ( 3 2/3 - 2 1/4 )=

zad 5 skwer poetow ma ksztalt prostokata. ile metrow kwadratowych zajmuje ten skwer, jesli na planie w skali 1 : 6 000 ma wymiary 8 mm x 1,5 cm?

pilne !!!!!!

Answer 1

1. 8 i5/11 * 4 i2/9 + 8i5/11 * 6 i7/9 = 93/11*38/9 + 93/11 * 61/9 =31/11*38/9  +   +31/11*61/3 = 1 178/99 + 1 891/33 = 11 i 89/99 + 57 i 10/33= 11 i 89/99 +57i30/99= 

= 68 i 119/99 = 69 i 20/99

2. 6i3/5 * 7i1/6 - 2i1/6*6i3/5 =33/5*43/6 - 13/6*33/5 = 11/5*43/2-13/2*11/5=

    = 473/10 -143/10 = 330/10= 33

3. 7i1/8:4i34 * 8 = 57/8 : 19/4 *8 = 57/8*4/19*8= 57/2*1/19 *8= 57/38 *8=

    = 57/19 *4 = 228/19 = 12

4. 11i1/3:4/21 : 4i4/1= 34/3 * 21/4 : 8/1= 17/1*7/2:8/1= 119/2*1/8=119/16=7i7/16

5. 7/8*8/9:1i1/9 = 7/1 * 1/9 : 10/9 =  7/9 * 9/10 = 7/1 * 1/10 = 7/10

6. (6i3/8 -4i1/8) :2i1/2= 2i2/8 : 5/2 = 18/8 * 2/5 = 18/4 * 1/5 = 18/20

7. (6i2/3-5i3/4):1 i1/12= (6i8/12-5i9/12):13/12= 11/12*12/13 = 11/1*1/13= 11/13

8.(2i5/8-1i1/6):2i1/2=(2i15/24-1i4/24):5/2=1i11/24*2/5=35/24*2/5=7/12*1/1=7/12 

9. 4i1/2:(3i2/3 - 2i1/4)= 9/2:(3i8/12-2i3/12)= 9/2:1i5/12=9/2:17/12=9/2*12/17 =

    = 9/1 * 6/17 = 54/17 = 3 i 3/17 

 

zad.5

1 cm na planie = 6 000 cm w terenie

8 mm = 0,8 cm

0,8 cm * 6 000 = 4 800 cm = 48 m

1,5 cm * 6 000 = 9 000 cm = 90 m

48 m * 90 m = 4 320 mdo2