Question

tính thuận tiện

9,65*0,4*2,5

0,25*40*9,84

7,38*1,25*80

34,3*5*0,4

Answer 1

\(9,65\times0,4\times2,5\)

\(=9,65\times1\)

\(=9,65\)

\(0,25\times40\times9,84\)

\(=10\times9,84\)

\(=98,4\)

\(7,38\times1,25\times80\)

\(=7,38\times100\)

\(=738\)

\(34,3\times5\times0,4\)

\(=34,3\times2\)

\(=68,6\)

Answer 2

\(9,65\times0,4\times2,5\)

\(=9,65\times1\)

\(=9,65\)

\(0,25\times40\times9,84\)

\(=10\times9,84\)

\(=98,4\)

\(7,38\times1,25\times80\)

\(=7,38\times100\)

\(=738\)

\(34,3\times5\times0,4\)

\(=34,3\times2\)

\(=68,6\)