Toán Lớp 6: thực hiện phép tính
a.5.5^2-3^2.(2022^0-1^2022)
b.24.82+24.18-100
c.(-26)+16+(-34)+26
d.12+3.[39-(5-2)^2]
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Toán Lớp 6: thực hiện phép tính
a.5.5^2-3^2.(2022^0-1^2022)
b.24.82+24.18-100
c.(-26)+16+(-34)+26
d.12+3.[39-(5-2)^2]
Comments ( 2 )
Giải đáp:
a.5.5²-3².(2022^0-1^2022)
=5^1+2-9(1-1)
=5³+9.0
=125+0
=125
b.24.82+24.18-100
=24(82+18)-100
=24.100-100
=2400-100
=2300
c.(-26)+16+(-34)+26
=(-26)+16-34+26
=(-26+26)+(16-34)
=0+(-18)
=-18
d.12+3.[39-(5-2)²]
=12+3.[39-3²]
=12+3.[39-9]
=12+3.30
=12+90
=102
Giải đáp:
a, 5.5^2-3^2.(2022^0-1^2022)
= 5 . 25 – 9.(1 – 1)
= 5 . 25 – 9 . 0
= 125 – 0
= 125
$\\$
b, 24.82 + 24.18 – 100
= 24.(82 + 18) – 100
= 24.100 – 100
= 2400 – 100
= 2300
$\\$
b, (−26)+16+(−34)+26
=(−26+26)+(16−34)
= 0 – 18
= -18
$\\$
c, 12+3.[39−(5−2)^2]
= 12+3.[39−3^2]
=12+3.[39−9]
= 12+3.30
= 12 + 90
= 102
$#dariana$