Question

简算33.3×284+66.6×358？

Answer 1

直接提取公约数33.3得
33.3x(284+2x358)
=33.3x1000
=33300

Answer 2

33.3×284+66.6×358
＝33.3×2×142+66.6×358
＝66.6（142＋358）
＝66.6×500
＝33300

Answer 3

=33.3（284+2x358）

=33.3(284+716)

=33.3x1000

=33300