\(17,8.99+17,8=17,8\left(99+1\right)=17,8.100=1780\)
\(29,6.5,2+29,6.5,8-29,6=29,6\left(5,2+5,8-1\right)=29,6.10=296\)
\(45,651.73+45,651.20+45,651.7=45,651.\left(73+20+7\right)=45,651.100=4565,1\)
\(17,8.99+17,8\)
\(=17,8.\left(99+1\right)\)
\(=17,8.100\)
\(=1780\)
\(29,6.5,2+29,6.5,8-29,6\)
\(=29,6.\left(5,2+5,8-1\right)\)
\(=29,6.10\)
\(=296\)
\(45,6518.73+45,651.20+45,651.7\)
\(=45,6518.73+45,651.\left(20+7\right)\)
\(=45,6518.73+45,651.27\)
\(=3332,5814+1049,973\)
\(=4382,5544\)
Góp ý: Câu cuối mk nghĩ bn viết thừa số 8, nếu thế này ko tính nhanh đc !!!
