Toán Lớp 6: Bài 5. Thực hiện phép tính
a) 2.52 + 3: 710 – 54 : 33 b) 189 + 73 + 211 + 127
c) 375 : {32 – [4 + (5.32 – 42)]} – 14
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Toán Lớp 6: Bài 5. Thực hiện phép tính
a) 2.52 + 3: 710 – 54 : 33 b) 189 + 73 + 211 + 127
c) 375 : {32 – [4 + (5.32 – 42)]} – 14
Comments ( 2 )
=104+3/710-54/33
=73843/710-54/33
=102,3678617
b) 189 + 73 + 211 + 127
=(189+211)+(73+127)
=400+200
=600
c) 375 : {32 – [4 + (5.32 – 42)]} – 14
=375:{32-[4+(160-42)]}-14
=375:{32-[4+118]}-14
=375:{32-120}-14
=375:-88-14
=-375/88-14
=-1607/88