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Help you solve math 26/08/2017 at 15:59100 + 200 + 300 + 500 + 700 + 800 + 900 200 + 300 + 400 + 100 + 700 + 600 + 900
=(100 + 900) + (200 + 800) + (300 + 700) + 500 =(300 + 700) + (400 + 600) + (100 + 900) + 200
=1000 + 1000 + 1000 + 500 =1000 + 1000 + 1000 + 200
=3000 + 500 =3000 + 200
=3500 =3200
longia selected this answer. -
Dao Trong Luan 26/08/2017 at 16:11100 + 200 + 300 + 500 + 700 + 800 + 900
= \(\left(1+2+3+5+7+8+9\right).100\)
\(=35.100=3500\)
200 + 300 + 400 + 100 + 700 + 600 + 900
= \(\left(2+3+4+1+7+6+9\right).100\)
\(=32.100=3200\)
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I like math 27/08/2017 at 08:35100 + 200 + 300 + 500 + 700 + 800 + 900
=(100 + 900) + (200 + 800) + (300 + 700) + 500
=1000 + 1000 + 1000 + 500
=3000 + 500
= 3500
