Question

tinh nhanh 

2002 x 8648 + 2003 x 1352 - 352

Answer 1

2002 x 8648 + 2002 x 1352 + (1352-352)

=2002 x (8648+1352) + 1000

= 2002 x 10000 +1000

=20020000+1000

=20021000

Nha bạn        

Answer 2

2002 x 8648 + 2003 x 1352 - 352

= 2002 x 8648 + ( 2002 + 1 ) x 1352 - 352

= 2002 x 8648 + 2002 x 1352 + 1352 - 352

= 2002 x ( 8648 + 1352 ) + 1000

= 2002 x 10000 + 1000

= 20020000 + 1000 

= 20021000

Answer 3

2002.8648+2003.1352-352=2002.8648+(2002+1).1352-352=2002.8648+2002.1352+(2002-352)=2002(8648+1352)+1650=2002.10000+1650=20020000+1650=20021650