2:
1: =16-5+17*9
=11+153=164
2: =200-11^2+160
=360-121=239
3: =125-100-12=113-100=13
4: =8^3+2*9-20
=512-2
=510
5: =7^2+100-96
=49+4=53
6: =100*3-25-9^2
=300-25-81
=300-106
=194
Bài 1:
1) \(3^4:3+2^2\cdot2\)
\(=3^3+2^3\)
\(=27+8\)
\(=35\)
2) \(5^6:5^4+3^2\cdot3\)
\(=5^2+3^3\)
\(=25+27\)
\(=52\)
3) \(3^6:3^4+5\cdot5^2\)
\(=3^2+5^3\)
\(=9+125\)
\(=134\)
4) \(10^7:10^4-10^2\cdot10\)
\(=10^3-10^3\)
\(=0\)
5) \(4^7:4^4+3^2\cdot2^3-7^0\)
\(=4^3+9\cdot8-1\)
\(=64+72-1\)
\(=135\)
6) \(3^8:3^4+8^4:8^4-1^9\)
\(=3^4+1-1\)
\(=3^4\)
\(=81\)
7) \(2\cdot10^3+7\cdot10^2+8\cdot10+7\)
\(=2\cdot1000+7\cdot100+80+7\)
\(=2000+700+80+7\)
\(=2787\)
8) \(19\cdot10^3+5\cdot10^2+6\cdot10\)
\(=19\cdot1000+5\cdot100+60\)
\(=19000+500+60\)
\(=19560\)
