Toán Lớp 6: thục hiện phép tính
27.8 – 60 : 30 + 27 . 12
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Toán Lớp 6: thục hiện phép tính
27.8 – 60 : 30 + 27 . 12
Comments ( 2 )
27 . 8 – 60 : 30 + 27 . 12
= 27 . 8 – (60 : 30) + 27 . 12
= 27 . 8 – 2 + 27 . 12
= 27 . (8 – 2) + 27 . 12
= 27 . 6 + 27 . 12
= 27 . (6 + 12)
= 27 . 18
= 486.
#Black
27.8 – 60 : 30 + 27 . 12
= (27.8 +27.12) -60:30
=27(8+12)-2
=27.20-2
=540-2
=538