Question

11×22+0.22×3300+330×4.4用简便方法计算要用脱式

Answer 1

   11×22+0.22×3300+330×4.4

=11×22+22×33+33×44

=11×22+22×33+33×2×22

=（11+33+66）×22

=110×22

=2420

或:

11×22+0.22×3300+330×4.4

=11×22+22×33+33×44

=（11+33）×22+33×44

=44×22+33×44

=44×（22+33）

=44×55

=2420

.把小数变成正数，灵活运用学到的知识，难题也能轻易攻克

Answer 2

原式
=11x22+0.22x3300+330x4.4
=11x22+22x33+33x44
=11x22+22x33+33x2x22
=11x22+22x33+66x22
=(11+33+66)x22
=110x22
=100x22+10x22
=2200+220
=2420

或者
=11x22+22x33+33x44
=(11+33)x22+33x44
=44x22+33x44
=44x(22+33)
=44x55
=44x50+44x5
=2200+220
=2420

Answer 3

1100×0.22＋0.22×3300＋6600×0.22