Question

Hello, I just wanted to know if someone could check my work to see if they are right or wrong. Thanks :)

5. Find 2/5 of 4/11.
Answer: 8/55

8. Are 3/21 and 3/54 equivalent fractions?
Answer: No

14. Write in decimal form 8 583/10,000
Answer: 8.0583

22. Solve for the unknown: 8/52 = m/39
Answer: m=6

25. 1,155 is what percent of 210?
Answer: 550%

26. What is 60% of 240?
Answer: 144

38. Add 2.90 + (-2.33)
Answer: 0.57

39. Subtract 7/9 - (-13/18)
Answer: 1/18

Answer 1

all correct except the last one

7/9 - (-13/18)
= 7/9 + 13/18
= 27/18
= 3/2 or 1 1/2

Answer 2

Thanks so much I really appreciate your help!