= 2300 – 140 = 2160 B 300
Câu 1
= 2300 – 140 = 2160
b 300 : 4 + 300 : 6 – 25 = 75 + 50 -25 = 100 0,75
0,75
c 276 : [ 110 – ( 17 – 9 )
2
] – 2021
0
= 276 : (110 – 64) – 1
= 276 : 46 – 1
= 5
d 6
20
: (6
15
.25 + 6
15
.11) = 6
20
: 6
17
= 6
3
2
0
20
15
15
20
17
3