Tính nhanh: 2010 × 125 + 1000 / 126x 2010 – 1000 ( đây là phép tính phân số, đấu gạch ngang đấy) 11/09/2021 Bởi Aaliyah Tính nhanh: 2010 × 125 + 1000 / 126x 2010 – 1000 ( đây là phép tính phân số, đấu gạch ngang đấy)
2010 × 125 + 1000 / 126x 2010 – 1000 =2010 × 126 – 2010 + 1000/126 × 2010 – 1000 =126 × 2010 – 1010/126 × 2010 -1000 = 126 × 2010 – 1000 – 10/126 × 2010 – 1000 = (126 × 2010 – 1000/126 × 2010 -1000) – 10/126 × 2010 -1000 = 1 – 10/126 × 201 × 10 – 10 × 100 = 1 – 10/10 ×(126 × 201 – 100) = 1 – 1/126 × 201 -100 = 1 – 1/25326 – 100 = 1 – 1/25226 = 25225/25226 ~~ HƠI TO~~ Bình luận
2010 × 125 + 1000 / 126 × 2010 – 1000 = 2010 × 125 + 1000 / 2010 × 125 + 2010 – 1000 = 2010 × 125 – 1000 / 2010 × 125 + 1010 = $\dfrac{100}{101}$ Bình luận
2010 × 125 + 1000 / 126x 2010 – 1000
=2010 × 126 – 2010 + 1000/126 × 2010 – 1000
=126 × 2010 – 1010/126 × 2010 -1000
= 126 × 2010 – 1000 – 10/126 × 2010 – 1000
= (126 × 2010 – 1000/126 × 2010 -1000) – 10/126 × 2010 -1000
= 1 – 10/126 × 201 × 10 – 10 × 100
= 1 – 10/10 ×(126 × 201 – 100)
= 1 – 1/126 × 201 -100
= 1 – 1/25326 – 100
= 1 – 1/25226
= 25225/25226
~~ HƠI TO~~
2010 × 125 + 1000 / 126 × 2010 – 1000
= 2010 × 125 + 1000 / 2010 × 125 + 2010 – 1000
= 2010 × 125 – 1000 / 2010 × 125 + 1010
= $\dfrac{100}{101}$