Answer:
A, B and D
Step-by-step explanation:
(a)1.7+9+6.41
We annex zeros as follows:
![\text{1}.70+9.00+6.41](https://img.qammunity.org/2023/formulas/mathematics/college/w9v2q6avb4jrds3230f90abxvqjnpzp16r.png)
(b)0.03+12
We annex zeros as follows:
![0.03+12.00](https://img.qammunity.org/2023/formulas/mathematics/college/c93q8ho9j3btgo22oevbqszgiiz6sbfpf8.png)
(c)19.3+0.3
Since there is 1 digit after the decimal point in each there is no need to annex zeros.
(d)1+2.46+17.44
We annex zeros as follows:
![1.00+2.46+17.44](https://img.qammunity.org/2023/formulas/mathematics/college/whh6hfas6ybx2ffn56keh09g24itu1trao.png)
(e)0.68+12.44
Since there are 2 digits after the decimal point in each there is no need to annex zeros.
A, B and D are the correct choices.