=(54+45)+99×( 100- 1)

= 100+99× 100-99

= 100×(99+ 1)-99

= 100× 100-99

= 10000-99

=990 1

Solution: (144+96)×(44- 18)

=240×26

=240×(20+6)

=240×20+240×6

=4800+ 1440

=6240

Solution: [(36- 12)×8]÷ 16.

=24×(8÷ 16)

=24×( 1/2)

= 12

Solution: 67×9+99×3

=67×9+9×33

=9×(67+33)

=9× 100

=900

Solution: 345÷ 15+38× 106

=23+4028

=405 1

Solution: (632×5+632×2+632)× 125.

=632×(5+2+ 1)× 125

=632×(8× 125)

=632× 1000

=632000

Solution: suppose that each basket of apples weighs x kilograms.

∴3x=7(x-20)

4x= 140

x=35

A: It turns out that each basket of apples weighs 35 kilograms.