9.6+9.9×99怎么简算???????????????

2025-04-03 23:49:39
推荐回答(4个)
回答1:

=9.6+9.9×(100-1)
=9.6+9.9×100-9.9×1
=9.6+990-9.9
=990-0.3
=989.7

回答2:

9.6+9.9*99

原式=9.6+(10-0.1)*99
=9.6+990-9.9
=990-0.3
=989.7

回答3:

9.6+9.9x(100-1)
=9.6+9.9x100-9.9x1
=9.6+990-9.9
=990-9.3
=981.7

回答4:

9.6+9.9×99
=9.9×(1+99)
=9.9×100
=990