Đáp án:
a, 3200:40.2
=3200:80
=40
b,3920:28:2
=3920:14
=280
c,(3^4.57-9^2.21):3^5
=(81.57-81.21):243
=81(57-21):243
=81.36:243
= 12
d,3^6:3^2+2^3.2^2-3^3.2
=729:9+8.4-27.3
=81+32-81
=32
e,3^8:3^4-9^5:9^3
=6561:81-59049:729
=81-81
=0
f,2^3.15+2^3.25
=2^3(15+35)
=8.50
=400
g,[600-(40.2^3+3.5^3)]:5
=[600-(40.8+3.125)]:5
=[600-(320+375)]:5
=600-695:5
=600-139
=461
h,3^2.10^3-[13^2-(5^2.4+2^2.15)].10^3
=9
=81(57-21):243
=81.36:243
=
=81(57-21):243
=81.36:243
= 12
Đáp án:
a, 3200:40.2
=3200:80
=40
b,3920:28:2
=3920:14
=280
c,(3^4.57-9^2.21):3^5
=(81.57-81.21):243
=81(57-21):243
=81.36:243
= 12
d,3^6:3^2+2^3.2^2-3^3.2
=729:9+8.4-27.3
=81+32-81
=32
e,3^8:3^4-9^5:9^3
=6561:81-59049:729
=81-81
=0
f,2^3.15+2^3.25
=2^3(15+35)
=8.50
=400
g,[600-(40.2^3+3.5^3)]:5
=[600-(40.8+3.125)]:5
=[600-(320+375)]:5
=600-695:5
=600-139
=461
h,3^2.10^3-[13^2-(5^2.4+2^2.15)].10^3
=9.1000-[169-(25.4+4.15)].1000
=9000-[169-100+60].1000
=9000-[169-160].1000
=9000-9.1000
=9000-9000
=0
tớ làm mún gãy tay r mong bạn cho tớ xin ctlhn
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