Toán Lớp 6: Bài 1 : Thực hiện phép tính :
a) (29 – 29 ) . (-9) + ( -13 – 7) . 21
b) (39 . 42 – 37 . 42 ) : 42
c) [157 . 1 mũ 2021 – (13 – 4 ) ²] : 4 – 3 mũ 5 : 3 ²
d) 250 : {5 .[88. 7897 mũ 0 – ( 2024 – 1946)]}
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Toán Lớp 6: Bài 1 : Thực hiện phép tính :
a) (29 – 29 ) . (-9) + ( -13 – 7) . 21
b) (39 . 42 – 37 . 42 ) : 42
c) [157 . 1 mũ 2021 – (13 – 4 ) ²] : 4 – 3 mũ 5 : 3 ²
d) 250 : {5 .[88. 7897 mũ 0 – ( 2024 – 1946)]}
Comments ( 1 )
Cau a ) (29-29)×(-9)+(-13-7)×21 =0×(-9)+(-20)×21
=0+(-42)=-42