Toán Lớp 6: A, 18 : 3² + 5.2³ – 2021 ^0
B, (-12)+42
C,53.26 + 53.75 – 53
D, 2886+ ( -2021)+(-2886)
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Toán Lớp 6: A, 18 : 3² + 5.2³ – 2021 ^0
B, (-12)+42
C,53.26 + 53.75 – 53
D, 2886+ ( -2021)+(-2886)
Trình bày ra giúp em ạ
Comments ( 1 )
18 : 3^2 + 5 . 2^3 – 2021^0
= 18 : 9 + 5 . 8 – 1
= 2 + 40 – 1
= 41
(-12)+42 = 30
53.26 + 53.75 – 53
= 53 . ( 26 + 75 – 1 )
= 53 . 100
= 5300
2886+ ( -2021)+(-2886)
= ( -2021)+ [ 2886+ (-2886) ]
= ( -2021)+ 0
= -2021