Question

tinh nhanh :20 x 30 x 20 x 30 x 40 + 500 = ? 

Answer 1

60×20×30×40+500

120×30×40+500

3600×40+500

144000+500

144500

Answer 2

Trả lời 

\(20\times30\times20\times30\times40+500\)

\(=600\times600\times40+500\)

\(=360000\times40+500\)

\(=14400000+500\)

\(=14400500\)

Answer 3

14400500

Answer 4

trả lời:

20 x 30 x 20 x 30 x 40 + 500

= 600 x 600 x 40 + 500

= 360 000 x 40 + 500

= 14 400 000 + 500

= 14 400 500

Answer 5

20 x 30 x 20 x 30 x 40 +500

=600 x 600 x 40 +500

=360 000 x 40 + 500

=14 400 000 + 500

=14 400 500

Answer 6

=2x3x2x3x4x10x10x10x10x10+500=14400000+500=14400500

Answer 7

Bài làm:

20  x 30  x 20  x 30 x 40 + 500

= ( 2 x 3 x 2 x 3 x 4 ) x ( 10 x 10 x 10 x 10 x 10 ) + 500

= 144 x 100000 + 500

= 14400000 + 500

= 14400500

Học tốt!!!

Answer 8

20x30x20x30x40+500

=600x600x40+500

=(360000x40)+500

=14400000+500

=14400500