Tính nhanh: 16 + (27 – 7.6) – (94.7 – 27.99) 08/07/2021 Bởi Josephine Tính nhanh: 16 + (27 – 7.6) – (94.7 – 27.99)
16 + (27 – 7.6) – (94.7 – 27.99) =16 + 27 – 7.6 – 94.7 + 27.99 =16 + (27 + 27.99) – (7.6 + 94.7) =16 +27. (1 + 99) – 7.(6 + 94) =16 +27.100 – 7.100 =16 +2700 – 700 =16 +(2700 – 700) =16+2000 =2016. Bình luận
16 + (27 – 7.6) – (94.7 – 27.99)
=16 + 27 – 7.6 – 94.7 + 27.99
=16 + (27 + 27.99) – (7.6 + 94.7)
=16 +27. (1 + 99) – 7.(6 + 94)
=16 +27.100 – 7.100
=16 +2700 – 700
=16 +(2700 – 700)
=16+2000
=2016.