Odpowiedź:
a) 4 2 5 : 5 + 183 : 3
_______8 5 ___________ ____6 1 _______________
4 2 5 : 5 1 8 3 : 3
- 4 0 - 1 8
___________ _______________
2 5 3
- 2 5 - 3
____________ _____________
= = =
8 5
+ 6 1
_______________
1 4 6
b) 3*( 2 0 7 3 + 497) - 10 272 :6
2 0 7 3
+ 4 9 7
________________
2 5 7 0
_____1 7 1 2 __________
1 0 2 7 2 : 6
- 6
______________
4 2
- 4 2
_____________
7
- 6
_______________
1 2
- 1 2
_______________________
= =
2570
x 3
__________________
7 7 1 0
7 7 1 0
- 1 7 1 2
______________
5 9 9 8
3*( 2073 + 497 ) - 10 272 : 6= 5 998
c) 3 7 0 0 0 : 250 + 70*20= 1 5 4 8
____1 4 8 ________________
3 7 0 0 0 : 2 5 0
- 2 5 0
_______________
1 2 0 0
- 1 0 0 0
_____________
2 0 0 0
- 2 0 0 0
_________________
= = = =
7 0
x 2 0
_______
1 4 0 0
1 4 8
+ 1 4 0 0
_________________
1 5 4 8
d) 40 000 : ( 680 - 2560 : 4)= 1 0 0 0
___6 4 0 _________
2 5 6 0 : 4
- 2 4
___________
1 6
- 1 6
_____________
= =
6 8 0
- 6 4 0
__________________
4 0
_1 0 0 0 ________________
40 000 : 40
- 4 0
____________
= =
Szczegółowe wyjaśnienie:
