Question

123✘9+82✘8+44✘7用简便方法？

Answer 1

123×9+82×8+44×7

=1107+82×8+44×7

=1107+656+44×7

=1107+656+308

=1763+308

=2071

Answer 2

123×9+82×8+44×7
=41×3×9+41×2×8+44×7
=41×（27+16）+44×7
=41×43+44×7
=41×43+（41+3）×7
=41×43+41×7+3×7
=41×（43+7）+21
=41×50+21
=2050+21
=2071