Odpowiedź:
zad.4
a ) 2 1 0 1 4
+ 7 8 8
__________________
2 1 8 0 2
b) 4 0 2 6
- 3 9 7
_____________
3 6 2 9
c) 2 0 7
x 4 6
___________________
1 2 4 2
+ 8 2 8
________________
9 5 2 2
___2 0 4 __________
d) 3 6 7 2 : 18
- 3 6
_______________
7 2
- 7 2
_____________
= =
zad.6
a) 7428 +a= 12 000 1 2 0 0 0
a= 12 000 - 7428 - 7 4 2 8
a= 4572 ______________
4 5 7 2
spr... 7 4 2 8
+ 4 5 7 2
______________
1 2 0 0 0
b) b- 1646= 31 847 3 1 8 4 7
b= 31 847 + 1646 + 1 6 4 6
b= 33 493 ___________________
3 3 4 9 3
spr... 3 3 4 9 3
- 1 6 4 6
______________
3 1 8 4 7
_____3 0 5 _______
c) 2 6 *c = 7 9 3 0 7 9 3 0 : 26
c= 7 9 3 0 : 26 - 7 8
c= 305 ____________________
1 3 0
- 1 3 0
______________
= = =
d) y :40= 20 840 2 0 8 4 0
y= 20 840 * 40 x 4 0
y= 833 600 ________________
8 3 3 6 0 0
___2 0 8 4 0 _______________
spr... 8 3 3 6 0 0 : 40
- 8 0
________________
3 3 6
- 3 2 0
___________
1 6 0
- 1 6 0
______________
= = =
Szczegółowe wyjaśnienie:
