Question

can anyone help me with my problems for 25 points please

Answer 1

18.) 13.796

19.) 39.99

21.) 14.82

22.) 2.23

The decimal doesn't matter for subtraction and addition. It just goes down with the answers. 

Answer 2

Question 18- 13.796 Question 19- 39.99 Question 21- 14.82 Question 22- 2.23