Toán Giúp em bài tính nhanh ạ : 136×15+15×64-2020 12/09/2021 By Rylee Giúp em bài tính nhanh ạ : 136×15+15×64-2020
$136×15+15×64-2020$ $=15×(136+64)-2020$ $=15×200-2020$ $=150×20-101×20$ $=20×(150-101)$ $=20×49$ $=980$. Trả lời
136×15+15×64-2020 =15×(136+64)-2020 =15×200-2020 =15×20×10-20×101 =150×20-20×101 =20×(150-101) =20×49 =980 Trả lời
$136×15+15×64-2020$
$=15×(136+64)-2020$
$=15×200-2020$
$=150×20-101×20$
$=20×(150-101)$
$=20×49$
$=980$.
136×15+15×64-2020
=15×(136+64)-2020
=15×200-2020
=15×20×10-20×101
=150×20-20×101
=20×(150-101)
=20×49
=980