Bài 1 . Thực hiện phép tính :
a, ( 11 + 159 ) . 37 + ( 185 - 31 ) : 14
= 170 . 37 + 154 : 14
= 6290 + 11
= 6301
b, [ 25 . 103 + 7225 : 17 - ( 1500 - 125 ) : 5 ] . 32
= [ 25 . 103 + 7225 : 17 - 1375 : 5 ] . 32
= [ 2575 + 425 - 275 ] . 32
= 2725 . 32
= 87200
c, 136 . 25 + 75 . 136 - 62 . 102
= 136 . ( 25 + 75 ) - 36 . 100
= 136 . 100 - 36 . 100
= 100 . ( 136 - 36 )
= 100 . 100
= 10000
a, (11+159).37+(185-31):14 b,[25.103+7225:17-(1500-125):5].32 c, 136.25+75.136 - 62.102
=170.37+154:14 =[2575+425-1375:5].32 =136.(25+75)- (6.10)2
=6290+11 =[2575+425-275].32 =136.100 - 602
=6301 =2725.32 =13600 - 3600
= 87200 =10000