Tính nhanh 13.4.47 + 53.166 - 53.114
Giải thích
13.4.47 + 53.166 − 53.114
= 13.4.47 + (53.166 – 53.114)
= 52.47 + 53.(166 – 114)
= 52.47 + 53.52
= 52.(47 + 53)
= 52.100
= 5200
13.4.47 + 53.166 − 53.114
= 13.4.47 + (53.166 – 53.114)
= 52.47 + 53.(166 – 114)
= 52.47 + 53.52
= 52.(47 + 53)
= 52.100
= 5200