Question

16.8除以0.12加16.8除以0.48简便运算

Answer 1

简便运算就要想到学过的各种定律。交换律，结合律。
16.8÷0.12+16.8÷0.48
=16.8÷12%+16.8÷48%
=16.8×100/12+16.8×100/48
=16.8×（100/12+100/48）
=16.8×（400/48+100/48）
=16.8×500/48
=8400÷48
=700÷4
=175

Answer 2

16.8除以0.12加16.8除以0.48
=16.8/0.12+16.8/0.48
=16.8/0.12+16.8/(0.12×4)
=16.8/0.12(1+1/4)
=140×(5/4)
=175

Answer 3

16.8÷0.12＋16.8÷0.48
=16.8÷0.12＋(16.8÷4)÷(0.48÷4)
=16.8÷0.12+4.2÷0.12
=(16.8+4.2)÷0.12
=21÷0.12
=175