Question

1 Tính nhanh

a 347x6+347x3+347

b 2013+2013+2013x7+2013

Answer 1

a)

=347x6+347x3+347x1

=347x(6+3+1)

=347x10

=3470

b)

=2013x3+2013x7

=2013x(3+7)

=2013x10

=20130

Answer 2

a)

= 347 x 6 + 347 x 3 + 347 x 1

= 347 x ( 6 + 3 + 1 )

= 347 x 10

=3 470

b)

=2 013 x 3 + 2 013 x 7

=2 013 x ( 3 + 7 )

=2 013 x 10

=20 130

`Thảo`