Perform each of the following mathematical operations. Report the answer to the correct

number of significant figures.
a. (67.31) x (-0.057)
b. 345.1 + 868.2140 – 1000.023
c. 4.982 x 1034 ÷ 8.0 x 1036
d. (1,000,400) x (0.0005803)
e. (43.87 x 0.067010) + (6.02 x 1023 ÷ 9.573 x 1024)

This was my homework questions and I received it back but these weren’t correct and I need assistance on how to answer these. Thanks

I'll be glad to help but I would like for you to do three things first.

1. Post your solution to the first two or three questions, one with addition/subraction and one with multiplication/division
2. Tell us what your problem is in solving this type question.
3. Do you know the rules for significant figures.